Home / 521,359.14-782,123.07-161,445.39

Finding the Fourth Proportional to 521,359.14, 782,123.07 and 161,445.39

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Solution

The fourth proportional to 521,359.14, 782,123.07 and 161,445.39 is: 242,194.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,359.14 : 782,123.07 = 161,445.39 : x
  2. Step 2: Convert to fraction form
    521,359.14/782,123.07 = 161,445.39/x
  3. Step 3: Cross multiply
    521,359.14x = 782,123.07 × 161,445.39
  4. Step 4: Simplify right side
    521,359.14x = 126,270,164,064.15
  5. Step 5: Solve for x
    x = 126,270,164,064.15/521,359.14
  6. Step 6: Final answer
    x = 242,194.21

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1.5x scale

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.