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Finding the Fourth Proportional to 398,103,691.70, 597,155,537.55 and 225,916,807.70

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Solution

The fourth proportional to 398,103,691.70, 597,155,537.55 and 225,916,807.70 is: 338,875,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,103,691.70 : 597,155,537.55 = 225,916,807.70 : x
  2. Step 2: Convert to fraction form
    398,103,691.70/597,155,537.55 = 225,916,807.70/x
  3. Step 3: Cross multiply
    398,103,691.70x = 597,155,537.55 × 225,916,807.70
  4. Step 4: Simplify right side
    398,103,691.70x = 134,907,472,743,673,456
  5. Step 5: Solve for x
    x = 134,907,472,743,673,456/398,103,691.70
  6. Step 6: Final answer
    x = 338,875,211.55

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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.