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Finding the Fourth Proportional to 485,707.62, 728,120.37 and 169,992.30

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Solution

The fourth proportional to 485,707.62, 728,120.37 and 169,992.30 is: 254,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,707.62 : 728,120.37 = 169,992.30 : x
  2. Step 2: Convert to fraction form
    485,707.62/728,120.37 = 169,992.30/x
  3. Step 3: Cross multiply
    485,707.62x = 728,120.37 × 169,992.30
  4. Step 4: Simplify right side
    485,707.62x = 123,774,856,373.15
  5. Step 5: Solve for x
    x = 123,774,856,373.15/485,707.62
  6. Step 6: Final answer
    x = 254,834.08

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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.