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Finding the Fourth Proportional to 409,643.60, 614,854.20 and 252,179.60

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Solution

The fourth proportional to 409,643.60, 614,854.20 and 252,179.60 is: 378,508.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,643.60 : 614,854.20 = 252,179.60 : x
  2. Step 2: Convert to fraction form
    409,643.60/614,854.20 = 252,179.60/x
  3. Step 3: Cross multiply
    409,643.60x = 614,854.20 × 252,179.60
  4. Step 4: Simplify right side
    409,643.60x = 155,053,686,214.32
  5. Step 5: Solve for x
    x = 155,053,686,214.32/409,643.60
  6. Step 6: Final answer
    x = 378,508.75

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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.