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Finding the Fourth Proportional to 218,999.12, 328,497.92 and 52,787.12

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Solution

The fourth proportional to 218,999.12, 328,497.92 and 52,787.12 is: 79,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,999.12 : 328,497.92 = 52,787.12 : x
  2. Step 2: Convert to fraction form
    218,999.12/328,497.92 = 52,787.12/x
  3. Step 3: Cross multiply
    218,999.12x = 328,497.92 × 52,787.12
  4. Step 4: Simplify right side
    218,999.12x = 17,340,459,122.79
  5. Step 5: Solve for x
    x = 17,340,459,122.79/218,999.12
  6. Step 6: Final answer
    x = 79,180.50

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1.5x scale

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.