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Finding the Fourth Proportional to 266,921.28, 400,265.28 and 79,889.04

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Solution

The fourth proportional to 266,921.28, 400,265.28 and 79,889.04 is: 119,798.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,921.28 : 400,265.28 = 79,889.04 : x
  2. Step 2: Convert to fraction form
    266,921.28/400,265.28 = 79,889.04/x
  3. Step 3: Cross multiply
    266,921.28x = 400,265.28 × 79,889.04
  4. Step 4: Simplify right side
    266,921.28x = 31,976,808,964.53
  5. Step 5: Solve for x
    x = 31,976,808,964.53/266,921.28
  6. Step 6: Final answer
    x = 119,798.65

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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.