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Finding the Fourth Proportional to 485,516.75, 728,275.13 and 153,092.75

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Solution

The fourth proportional to 485,516.75, 728,275.13 and 153,092.75 is: 229,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,516.75 : 728,275.13 = 153,092.75 : x
  2. Step 2: Convert to fraction form
    485,516.75/728,275.13 = 153,092.75/x
  3. Step 3: Cross multiply
    485,516.75x = 728,275.13 × 153,092.75
  4. Step 4: Simplify right side
    485,516.75x = 111,493,641,642.84
  5. Step 5: Solve for x
    x = 111,493,641,642.84/485,516.75
  6. Step 6: Final answer
    x = 229,639.13

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Similar ratio
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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.