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Finding the Fourth Proportional to 354,367,807.80, 531,551,711.70 and 217,609,740.60

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Solution

The fourth proportional to 354,367,807.80, 531,551,711.70 and 217,609,740.60 is: 326,414,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,367,807.80 : 531,551,711.70 = 217,609,740.60 : x
  2. Step 2: Convert to fraction form
    354,367,807.80/531,551,711.70 = 217,609,740.60/x
  3. Step 3: Cross multiply
    354,367,807.80x = 531,551,711.70 × 217,609,740.60
  4. Step 4: Simplify right side
    354,367,807.80x = 115,670,830,098,522,976
  5. Step 5: Solve for x
    x = 115,670,830,098,522,976/354,367,807.80
  6. Step 6: Final answer
    x = 326,414,610.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.