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Finding the Fourth Proportional to 386,124.60, 579,264.06 and 133,414.20

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Solution

The fourth proportional to 386,124.60, 579,264.06 and 133,414.20 is: 200,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,124.60 : 579,264.06 = 133,414.20 : x
  2. Step 2: Convert to fraction form
    386,124.60/579,264.06 = 133,414.20/x
  3. Step 3: Cross multiply
    386,124.60x = 579,264.06 × 133,414.20
  4. Step 4: Simplify right side
    386,124.60x = 77,282,051,153.65
  5. Step 5: Solve for x
    x = 77,282,051,153.65/386,124.60
  6. Step 6: Final answer
    x = 200,147.96

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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.