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Finding the Fourth Proportional to 352,046.72, 485,697.12 and 231,253.76

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Solution

The fourth proportional to 352,046.72, 485,697.12 and 231,253.76 is: 319,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,046.72 : 485,697.12 = 231,253.76 : x
  2. Step 2: Convert to fraction form
    352,046.72/485,697.12 = 231,253.76/x
  3. Step 3: Cross multiply
    352,046.72x = 485,697.12 × 231,253.76
  4. Step 4: Simplify right side
    352,046.72x = 112,319,282,792.69
  5. Step 5: Solve for x
    x = 112,319,282,792.69/352,046.72
  6. Step 6: Final answer
    x = 319,046.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.