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Finding the Fourth Proportional to 266,972.80, 400,448.80 and 98,420.20

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Solution

The fourth proportional to 266,972.80, 400,448.80 and 98,420.20 is: 147,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,972.80 : 400,448.80 = 98,420.20 : x
  2. Step 2: Convert to fraction form
    266,972.80/400,448.80 = 98,420.20/x
  3. Step 3: Cross multiply
    266,972.80x = 400,448.80 × 98,420.20
  4. Step 4: Simplify right side
    266,972.80x = 39,412,251,609.35
  5. Step 5: Solve for x
    x = 39,412,251,609.35/266,972.80
  6. Step 6: Final answer
    x = 147,626.47

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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.