Home / 521,531.65-782,171.04-142,454.16

Finding the Fourth Proportional to 521,531.65, 782,171.04 and 142,454.16

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Solution

The fourth proportional to 521,531.65, 782,171.04 and 142,454.16 is: 213,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.65 : 782,171.04 = 142,454.16 : x
  2. Step 2: Convert to fraction form
    521,531.65/782,171.04 = 142,454.16/x
  3. Step 3: Cross multiply
    521,531.65x = 782,171.04 × 142,454.16
  4. Step 4: Simplify right side
    521,531.65x = 111,423,518,479.53
  5. Step 5: Solve for x
    x = 111,423,518,479.53/521,531.65
  6. Step 6: Final answer
    x = 213,646.70

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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.