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Finding the Fourth Proportional to 399,689,764.38, 551,402,978.22 and 267,573,323.70

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Solution

The fourth proportional to 399,689,764.38, 551,402,978.22 and 267,573,323.70 is: 369,138,118.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,689,764.38 : 551,402,978.22 = 267,573,323.70 : x
  2. Step 2: Convert to fraction form
    399,689,764.38/551,402,978.22 = 267,573,323.70/x
  3. Step 3: Cross multiply
    399,689,764.38x = 551,402,978.22 × 267,573,323.70
  4. Step 4: Simplify right side
    399,689,764.38x = 147,540,727,580,404,096
  5. Step 5: Solve for x
    x = 147,540,727,580,404,096/399,689,764.38
  6. Step 6: Final answer
    x = 369,138,118.43

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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.