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Finding the Fourth Proportional to 485,374.68, 728,389.80 and 169,834.32

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Solution

The fourth proportional to 485,374.68, 728,389.80 and 169,834.32 is: 254,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,374.68 : 728,389.80 = 169,834.32 : x
  2. Step 2: Convert to fraction form
    485,374.68/728,389.80 = 169,834.32/x
  3. Step 3: Cross multiply
    485,374.68x = 728,389.80 × 169,834.32
  4. Step 4: Simplify right side
    485,374.68x = 123,705,586,377.94
  5. Step 5: Solve for x
    x = 123,705,586,377.94/485,374.68
  6. Step 6: Final answer
    x = 254,866.17

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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.