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Finding the Fourth Proportional to 366,979,092.40, 550,468,638.60 and 203,720,417.20

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Solution

The fourth proportional to 366,979,092.40, 550,468,638.60 and 203,720,417.20 is: 305,580,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,979,092.40 : 550,468,638.60 = 203,720,417.20 : x
  2. Step 2: Convert to fraction form
    366,979,092.40/550,468,638.60 = 203,720,417.20/x
  3. Step 3: Cross multiply
    366,979,092.40x = 550,468,638.60 × 203,720,417.20
  4. Step 4: Simplify right side
    366,979,092.40x = 112,141,700,711,108,016
  5. Step 5: Solve for x
    x = 112,141,700,711,108,016/366,979,092.40
  6. Step 6: Final answer
    x = 305,580,625.80

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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.