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Finding the Fourth Proportional to 238,660.80, 357,999.84 and 80,904.48

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Solution

The fourth proportional to 238,660.80, 357,999.84 and 80,904.48 is: 121,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,660.80 : 357,999.84 = 80,904.48 : x
  2. Step 2: Convert to fraction form
    238,660.80/357,999.84 = 80,904.48/x
  3. Step 3: Cross multiply
    238,660.80x = 357,999.84 × 80,904.48
  4. Step 4: Simplify right side
    238,660.80x = 28,963,790,895.28
  5. Step 5: Solve for x
    x = 28,963,790,895.28/238,660.80
  6. Step 6: Final answer
    x = 121,359.65

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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.