Home / 442,146.60-663,349.07-142,620.55

Finding the Fourth Proportional to 442,146.60, 663,349.07 and 142,620.55

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Solution

The fourth proportional to 442,146.60, 663,349.07 and 142,620.55 is: 213,972.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,146.60 : 663,349.07 = 142,620.55 : x
  2. Step 2: Convert to fraction form
    442,146.60/663,349.07 = 142,620.55/x
  3. Step 3: Cross multiply
    442,146.60x = 663,349.07 × 142,620.55
  4. Step 4: Simplify right side
    442,146.60x = 94,607,207,903.57
  5. Step 5: Solve for x
    x = 94,607,207,903.57/442,146.60
  6. Step 6: Final answer
    x = 213,972.49

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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.