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Finding the Fourth Proportional to 485,710.38, 728,124.48 and 169,995.06

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Solution

The fourth proportional to 485,710.38, 728,124.48 and 169,995.06 is: 254,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,710.38 : 728,124.48 = 169,995.06 : x
  2. Step 2: Convert to fraction form
    485,710.38/728,124.48 = 169,995.06/x
  3. Step 3: Cross multiply
    485,710.38x = 728,124.48 × 169,995.06
  4. Step 4: Simplify right side
    485,710.38x = 123,777,564,665.07
  5. Step 5: Solve for x
    x = 123,777,564,665.07/485,710.38
  6. Step 6: Final answer
    x = 254,838.21

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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.