Home / 485,876.20-728,279.70-170,170.60

Finding the Fourth Proportional to 485,876.20, 728,279.70 and 170,170.60

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Solution

The fourth proportional to 485,876.20, 728,279.70 and 170,170.60 is: 255,068.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,876.20 : 728,279.70 = 170,170.60 : x
  2. Step 2: Convert to fraction form
    485,876.20/728,279.70 = 170,170.60/x
  3. Step 3: Cross multiply
    485,876.20x = 728,279.70 × 170,170.60
  4. Step 4: Simplify right side
    485,876.20x = 123,931,793,516.82
  5. Step 5: Solve for x
    x = 123,931,793,516.82/485,876.20
  6. Step 6: Final answer
    x = 255,068.66

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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.