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Finding the Fourth Proportional to 363,886,641.04, 502,405,957.80 and 215,255,510.32

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Solution

The fourth proportional to 363,886,641.04, 502,405,957.80 and 215,255,510.32 is: 297,195,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,886,641.04 : 502,405,957.80 = 215,255,510.32 : x
  2. Step 2: Convert to fraction form
    363,886,641.04/502,405,957.80 = 215,255,510.32/x
  3. Step 3: Cross multiply
    363,886,641.04x = 502,405,957.80 × 215,255,510.32
  4. Step 4: Simplify right side
    363,886,641.04x = 108,145,650,834,047,376
  5. Step 5: Solve for x
    x = 108,145,650,834,047,376/363,886,641.04
  6. Step 6: Final answer
    x = 297,195,990.83

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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.