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Finding the Fourth Proportional to 242,461,143.80, 363,691,715.70 and 69,943,585.40

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Solution

The fourth proportional to 242,461,143.80, 363,691,715.70 and 69,943,585.40 is: 104,915,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,461,143.80 : 363,691,715.70 = 69,943,585.40 : x
  2. Step 2: Convert to fraction form
    242,461,143.80/363,691,715.70 = 69,943,585.40/x
  3. Step 3: Cross multiply
    242,461,143.80x = 363,691,715.70 × 69,943,585.40
  4. Step 4: Simplify right side
    242,461,143.80x = 25,437,902,576,335,472
  5. Step 5: Solve for x
    x = 25,437,902,576,335,472/242,461,143.80
  6. Step 6: Final answer
    x = 104,915,378.10

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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.