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Finding the Fourth Proportional to 242,642.70, 363,964.05 and 158,661.90

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Solution

The fourth proportional to 242,642.70, 363,964.05 and 158,661.90 is: 237,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,642.70 : 363,964.05 = 158,661.90 : x
  2. Step 2: Convert to fraction form
    242,642.70/363,964.05 = 158,661.90/x
  3. Step 3: Cross multiply
    242,642.70x = 363,964.05 × 158,661.90
  4. Step 4: Simplify right side
    242,642.70x = 57,747,227,704.70
  5. Step 5: Solve for x
    x = 57,747,227,704.70/242,642.70
  6. Step 6: Final answer
    x = 237,992.85

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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.