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Finding the Fourth Proportional to 266,313.13, 399,470.77 and 66,632.97

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Solution

The fourth proportional to 266,313.13, 399,470.77 and 66,632.97 is: 99,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,313.13 : 399,470.77 = 66,632.97 : x
  2. Step 2: Convert to fraction form
    266,313.13/399,470.77 = 66,632.97/x
  3. Step 3: Cross multiply
    266,313.13x = 399,470.77 × 66,632.97
  4. Step 4: Simplify right side
    266,313.13x = 26,617,923,167.57
  5. Step 5: Solve for x
    x = 26,617,923,167.57/266,313.13
  6. Step 6: Final answer
    x = 99,949.72

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1.5x scale

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.