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Finding the Fourth Proportional to 485,412.48, 728,446.62 and 169,872.12

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Solution

The fourth proportional to 485,412.48, 728,446.62 and 169,872.12 is: 254,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,412.48 : 728,446.62 = 169,872.12 : x
  2. Step 2: Convert to fraction form
    485,412.48/728,446.62 = 169,872.12/x
  3. Step 3: Cross multiply
    485,412.48x = 728,446.62 × 169,872.12
  4. Step 4: Simplify right side
    485,412.48x = 123,742,771,646.23
  5. Step 5: Solve for x
    x = 123,742,771,646.23/485,412.48
  6. Step 6: Final answer
    x = 254,922.93

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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.