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Finding the Fourth Proportional to 485,730.20, 728,060.70 and 170,024.60

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Solution

The fourth proportional to 485,730.20, 728,060.70 and 170,024.60 is: 254,849.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,730.20 : 728,060.70 = 170,024.60 : x
  2. Step 2: Convert to fraction form
    485,730.20/728,060.70 = 170,024.60/x
  3. Step 3: Cross multiply
    485,730.20x = 728,060.70 × 170,024.60
  4. Step 4: Simplify right side
    485,730.20x = 123,788,229,293.22
  5. Step 5: Solve for x
    x = 123,788,229,293.22/485,730.20
  6. Step 6: Final answer
    x = 254,849.77

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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.