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Finding the Fourth Proportional to 485,397.02, 728,423.58 and 169,856.66

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Solution

The fourth proportional to 485,397.02, 728,423.58 and 169,856.66 is: 254,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,397.02 : 728,423.58 = 169,856.66 : x
  2. Step 2: Convert to fraction form
    485,397.02/728,423.58 = 169,856.66/x
  3. Step 3: Cross multiply
    485,397.02x = 728,423.58 × 169,856.66
  4. Step 4: Simplify right side
    485,397.02x = 123,727,596,364.04
  5. Step 5: Solve for x
    x = 123,727,596,364.04/485,397.02
  6. Step 6: Final answer
    x = 254,899.79

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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.