Home / 420,734.50-580,615.76-229,747.90

Finding the Fourth Proportional to 420,734.50, 580,615.76 and 229,747.90

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Solution

The fourth proportional to 420,734.50, 580,615.76 and 229,747.90 is: 317,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,734.50 : 580,615.76 = 229,747.90 : x
  2. Step 2: Convert to fraction form
    420,734.50/580,615.76 = 229,747.90/x
  3. Step 3: Cross multiply
    420,734.50x = 580,615.76 × 229,747.90
  4. Step 4: Simplify right side
    420,734.50x = 133,395,251,566.90
  5. Step 5: Solve for x
    x = 133,395,251,566.90/420,734.50
  6. Step 6: Final answer
    x = 317,053.28

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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.