Home / 311,393,689.28-429,715,726.45-172,160,871.20

Finding the Fourth Proportional to 311,393,689.28, 429,715,726.45 and 172,160,871.20

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Solution

The fourth proportional to 311,393,689.28, 429,715,726.45 and 172,160,871.20 is: 237,577,819.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,393,689.28 : 429,715,726.45 = 172,160,871.20 : x
  2. Step 2: Convert to fraction form
    311,393,689.28/429,715,726.45 = 172,160,871.20/x
  3. Step 3: Cross multiply
    311,393,689.28x = 429,715,726.45 × 172,160,871.20
  4. Step 4: Simplify right side
    311,393,689.28x = 73,980,233,831,393,904
  5. Step 5: Solve for x
    x = 73,980,233,831,393,904/311,393,689.28
  6. Step 6: Final answer
    x = 237,577,819.91

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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.