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Finding the Fourth Proportional to 274,262.40, 411,423.84 and 87,230.16

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Solution

The fourth proportional to 274,262.40, 411,423.84 and 87,230.16 is: 130,854.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,262.40 : 411,423.84 = 87,230.16 : x
  2. Step 2: Convert to fraction form
    274,262.40/411,423.84 = 87,230.16/x
  3. Step 3: Cross multiply
    274,262.40x = 411,423.84 × 87,230.16
  4. Step 4: Simplify right side
    274,262.40x = 35,888,567,391.01
  5. Step 5: Solve for x
    x = 35,888,567,391.01/274,262.40
  6. Step 6: Final answer
    x = 130,854.86

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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.