Home / 318,890,816.40-440,069,323.06-172,213,100.40

Finding the Fourth Proportional to 318,890,816.40, 440,069,323.06 and 172,213,100.40

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Solution

The fourth proportional to 318,890,816.40, 440,069,323.06 and 172,213,100.40 is: 237,654,076.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,890,816.40 : 440,069,323.06 = 172,213,100.40 : x
  2. Step 2: Convert to fraction form
    318,890,816.40/440,069,323.06 = 172,213,100.40/x
  3. Step 3: Cross multiply
    318,890,816.40x = 440,069,323.06 × 172,213,100.40
  4. Step 4: Simplify right side
    318,890,816.40x = 75,785,702,515,091,824
  5. Step 5: Solve for x
    x = 75,785,702,515,091,824/318,890,816.40
  6. Step 6: Final answer
    x = 237,654,076.62

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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.