Home / 420,531.60-580,347.36-229,555.20

Finding the Fourth Proportional to 420,531.60, 580,347.36 and 229,555.20

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Solution

The fourth proportional to 420,531.60, 580,347.36 and 229,555.20 is: 316,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,531.60 : 580,347.36 = 229,555.20 : x
  2. Step 2: Convert to fraction form
    420,531.60/580,347.36 = 229,555.20/x
  3. Step 3: Cross multiply
    420,531.60x = 580,347.36 × 229,555.20
  4. Step 4: Simplify right side
    420,531.60x = 133,221,754,294.27
  5. Step 5: Solve for x
    x = 133,221,754,294.27/420,531.60
  6. Step 6: Final answer
    x = 316,793.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.