Home / 319,209.12-440,495.09-174,011.76

Finding the Fourth Proportional to 319,209.12, 440,495.09 and 174,011.76

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Solution

The fourth proportional to 319,209.12, 440,495.09 and 174,011.76 is: 240,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,209.12 : 440,495.09 = 174,011.76 : x
  2. Step 2: Convert to fraction form
    319,209.12/440,495.09 = 174,011.76/x
  3. Step 3: Cross multiply
    319,209.12x = 440,495.09 × 174,011.76
  4. Step 4: Simplify right side
    319,209.12x = 76,651,325,664.74
  5. Step 5: Solve for x
    x = 76,651,325,664.74/319,209.12
  6. Step 6: Final answer
    x = 240,128.87

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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.