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Finding the Fourth Proportional to 266,475.84, 399,713.76 and 74,342.76

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Solution

The fourth proportional to 266,475.84, 399,713.76 and 74,342.76 is: 111,514.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,475.84 : 399,713.76 = 74,342.76 : x
  2. Step 2: Convert to fraction form
    266,475.84/399,713.76 = 74,342.76/x
  3. Step 3: Cross multiply
    266,475.84x = 399,713.76 × 74,342.76
  4. Step 4: Simplify right side
    266,475.84x = 29,715,824,128.38
  5. Step 5: Solve for x
    x = 29,715,824,128.38/266,475.84
  6. Step 6: Final answer
    x = 111,514.14

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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.