Home / 319,007,140,834.20-440,231,180,708.79-172,519,602,240.30

Finding the Fourth Proportional to 319,007,140,834.20, 440,231,180,708.79 and 172,519,602,240.30

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Solution

The fourth proportional to 319,007,140,834.20, 440,231,180,708.79 and 172,519,602,240.30 is: 238,077,768,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,007,140,834.20 : 440,231,180,708.79 = 172,519,602,240.30 : x
  2. Step 2: Convert to fraction form
    319,007,140,834.20/440,231,180,708.79 = 172,519,602,240.30/x
  3. Step 3: Cross multiply
    319,007,140,834.20x = 440,231,180,708.79 × 172,519,602,240.30
  4. Step 4: Simplify right side
    319,007,140,834.20x = 75,948,508,189,658,070,384,640
  5. Step 5: Solve for x
    x = 75,948,508,189,658,070,384,640/319,007,140,834.20
  6. Step 6: Final answer
    x = 238,077,768,388.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.