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Finding the Fourth Proportional to 264,473.76, 396,626.40 and 86,939.85

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Solution

The fourth proportional to 264,473.76, 396,626.40 and 86,939.85 is: 130,382.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,473.76 : 396,626.40 = 86,939.85 : x
  2. Step 2: Convert to fraction form
    264,473.76/396,626.40 = 86,939.85/x
  3. Step 3: Cross multiply
    264,473.76x = 396,626.40 × 86,939.85
  4. Step 4: Simplify right side
    264,473.76x = 34,482,639,722.04
  5. Step 5: Solve for x
    x = 34,482,639,722.04/264,473.76
  6. Step 6: Final answer
    x = 130,382.08

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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.