Home / 521,531.82-782,171.28-142,454.31

Finding the Fourth Proportional to 521,531.82, 782,171.28 and 142,454.31

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Solution

The fourth proportional to 521,531.82, 782,171.28 and 142,454.31 is: 213,646.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.82 : 782,171.28 = 142,454.31 : x
  2. Step 2: Convert to fraction form
    521,531.82/782,171.28 = 142,454.31/x
  3. Step 3: Cross multiply
    521,531.82x = 782,171.28 × 142,454.31
  4. Step 4: Simplify right side
    521,531.82x = 111,423,669,994.22
  5. Step 5: Solve for x
    x = 111,423,669,994.22/521,531.82
  6. Step 6: Final answer
    x = 213,646.93

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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.