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Finding the Fourth Proportional to 485,605.68, 728,496.16 and 148,640.24

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Solution

The fourth proportional to 485,605.68, 728,496.16 and 148,640.24 is: 222,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,605.68 : 728,496.16 = 148,640.24 : x
  2. Step 2: Convert to fraction form
    485,605.68/728,496.16 = 148,640.24/x
  3. Step 3: Cross multiply
    485,605.68x = 728,496.16 × 148,640.24
  4. Step 4: Simplify right side
    485,605.68x = 108,283,844,061.48
  5. Step 5: Solve for x
    x = 108,283,844,061.48/485,605.68
  6. Step 6: Final answer
    x = 222,987.19

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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.