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Finding the Fourth Proportional to 244,658.40, 366,987.60 and 78,463.20

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Solution

The fourth proportional to 244,658.40, 366,987.60 and 78,463.20 is: 117,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    244,658.40 : 366,987.60 = 78,463.20 : x
  2. Step 2: Convert to fraction form
    244,658.40/366,987.60 = 78,463.20/x
  3. Step 3: Cross multiply
    244,658.40x = 366,987.60 × 78,463.20
  4. Step 4: Simplify right side
    244,658.40x = 28,795,021,456.32
  5. Step 5: Solve for x
    x = 28,795,021,456.32/244,658.40
  6. Step 6: Final answer
    x = 117,694.80

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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.