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Finding the Fourth Proportional to 266,424.18, 399,625.29 and 148,020

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Solution

The fourth proportional to 266,424.18, 399,625.29 and 148,020 is: 222,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,424.18 : 399,625.29 = 148,020 : x
  2. Step 2: Convert to fraction form
    266,424.18/399,625.29 = 148,020/x
  3. Step 3: Cross multiply
    266,424.18x = 399,625.29 × 148,020
  4. Step 4: Simplify right side
    266,424.18x = 59,152,535,425.80
  5. Step 5: Solve for x
    x = 59,152,535,425.80/266,424.18
  6. Step 6: Final answer
    x = 222,023.90

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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.