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Finding the Fourth Proportional to 272,642.48, 409,028.58 and 85,654.04

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Solution

The fourth proportional to 272,642.48, 409,028.58 and 85,654.04 is: 128,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,642.48 : 409,028.58 = 85,654.04 : x
  2. Step 2: Convert to fraction form
    272,642.48/409,028.58 = 85,654.04/x
  3. Step 3: Cross multiply
    272,642.48x = 409,028.58 × 85,654.04
  4. Step 4: Simplify right side
    272,642.48x = 35,034,950,352.46
  5. Step 5: Solve for x
    x = 35,034,950,352.46/272,642.48
  6. Step 6: Final answer
    x = 128,501.44

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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.