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Finding the Fourth Proportional to 485,416.20, 727,929.90 and 169,710.60

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Solution

The fourth proportional to 485,416.20, 727,929.90 and 169,710.60 is: 254,497.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,416.20 : 727,929.90 = 169,710.60 : x
  2. Step 2: Convert to fraction form
    485,416.20/727,929.90 = 169,710.60/x
  3. Step 3: Cross multiply
    485,416.20x = 727,929.90 × 169,710.60
  4. Step 4: Simplify right side
    485,416.20x = 123,537,420,086.94
  5. Step 5: Solve for x
    x = 123,537,420,086.94/485,416.20
  6. Step 6: Final answer
    x = 254,497.93

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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.