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Finding the Fourth Proportional to 266,425.18, 399,626.79 and 148,021

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Solution

The fourth proportional to 266,425.18, 399,626.79 and 148,021 is: 222,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,425.18 : 399,626.79 = 148,021 : x
  2. Step 2: Convert to fraction form
    266,425.18/399,626.79 = 148,021/x
  3. Step 3: Cross multiply
    266,425.18x = 399,626.79 × 148,021
  4. Step 4: Simplify right side
    266,425.18x = 59,153,157,082.59
  5. Step 5: Solve for x
    x = 59,153,157,082.59/266,425.18
  6. Step 6: Final answer
    x = 222,025.40

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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.