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Finding the Fourth Proportional to 485,409.48, 728,442.12 and 169,869.12

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Solution

The fourth proportional to 485,409.48, 728,442.12 and 169,869.12 is: 254,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,409.48 : 728,442.12 = 169,869.12 : x
  2. Step 2: Convert to fraction form
    485,409.48/728,442.12 = 169,869.12/x
  3. Step 3: Cross multiply
    485,409.48x = 728,442.12 × 169,869.12
  4. Step 4: Simplify right side
    485,409.48x = 123,739,821,895.33
  5. Step 5: Solve for x
    x = 123,739,821,895.33/485,409.48
  6. Step 6: Final answer
    x = 254,918.43

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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.