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Finding the Fourth Proportional to 442,509.28, 663,767.80 and 142,989.92

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Solution

The fourth proportional to 442,509.28, 663,767.80 and 142,989.92 is: 214,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,509.28 : 663,767.80 = 142,989.92 : x
  2. Step 2: Convert to fraction form
    442,509.28/663,767.80 = 142,989.92/x
  3. Step 3: Cross multiply
    442,509.28x = 663,767.80 × 142,989.92
  4. Step 4: Simplify right side
    442,509.28x = 94,912,104,620.58
  5. Step 5: Solve for x
    x = 94,912,104,620.58/442,509.28
  6. Step 6: Final answer
    x = 214,486.13

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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.