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Finding the Fourth Proportional to 485,719.34, 728,137.96 and 170,004.02

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Solution

The fourth proportional to 485,719.34, 728,137.96 and 170,004.02 is: 254,851.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,719.34 : 728,137.96 = 170,004.02 : x
  2. Step 2: Convert to fraction form
    485,719.34/728,137.96 = 170,004.02/x
  3. Step 3: Cross multiply
    485,719.34x = 728,137.96 × 170,004.02
  4. Step 4: Simplify right side
    485,719.34x = 123,786,376,248.90
  5. Step 5: Solve for x
    x = 123,786,376,248.90/485,719.34
  6. Step 6: Final answer
    x = 254,851.65

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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.