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Finding the Fourth Proportional to 242,649,808.40, 363,974,712.60 and 78,887,248.40

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Solution

The fourth proportional to 242,649,808.40, 363,974,712.60 and 78,887,248.40 is: 118,330,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,649,808.40 : 363,974,712.60 = 78,887,248.40 : x
  2. Step 2: Convert to fraction form
    242,649,808.40/363,974,712.60 = 78,887,248.40/x
  3. Step 3: Cross multiply
    242,649,808.40x = 363,974,712.60 × 78,887,248.40
  4. Step 4: Simplify right side
    242,649,808.40x = 28,712,963,564,194,812
  5. Step 5: Solve for x
    x = 28,712,963,564,194,812/242,649,808.40
  6. Step 6: Final answer
    x = 118,330,872.60

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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.