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Finding the Fourth Proportional to 663,158.22, 915,159.51 and 361,352.22

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Solution

The fourth proportional to 663,158.22, 915,159.51 and 361,352.22 is: 498,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,158.22 : 915,159.51 = 361,352.22 : x
  2. Step 2: Convert to fraction form
    663,158.22/915,159.51 = 361,352.22/x
  3. Step 3: Cross multiply
    663,158.22x = 915,159.51 × 361,352.22
  4. Step 4: Simplify right side
    663,158.22x = 330,694,920,592.61
  5. Step 5: Solve for x
    x = 330,694,920,592.61/663,158.22
  6. Step 6: Final answer
    x = 498,666.70

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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.