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Finding the Fourth Proportional to 418,490.68, 627,730.62 and 102,950.32

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Solution

The fourth proportional to 418,490.68, 627,730.62 and 102,950.32 is: 154,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,490.68 : 627,730.62 = 102,950.32 : x
  2. Step 2: Convert to fraction form
    418,490.68/627,730.62 = 102,950.32/x
  3. Step 3: Cross multiply
    418,490.68x = 627,730.62 × 102,950.32
  4. Step 4: Simplify right side
    418,490.68x = 64,625,068,202.80
  5. Step 5: Solve for x
    x = 64,625,068,202.80/418,490.68
  6. Step 6: Final answer
    x = 154,424.15

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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.