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Finding the Fourth Proportional to 243,157.28, 365,377.36 and 130,920.48

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Solution

The fourth proportional to 243,157.28, 365,377.36 and 130,920.48 is: 196,726.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,157.28 : 365,377.36 = 130,920.48 : x
  2. Step 2: Convert to fraction form
    243,157.28/365,377.36 = 130,920.48/x
  3. Step 3: Cross multiply
    243,157.28x = 365,377.36 × 130,920.48
  4. Step 4: Simplify right side
    243,157.28x = 47,835,379,352.33
  5. Step 5: Solve for x
    x = 47,835,379,352.33/243,157.28
  6. Step 6: Final answer
    x = 196,726.08

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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.