Home / 218,780.57-328,226.20-61,009.04

Finding the Fourth Proportional to 218,780.57, 328,226.20 and 61,009.04

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Solution

The fourth proportional to 218,780.57, 328,226.20 and 61,009.04 is: 91,528.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,780.57 : 328,226.20 = 61,009.04 : x
  2. Step 2: Convert to fraction form
    218,780.57/328,226.20 = 61,009.04/x
  3. Step 3: Cross multiply
    218,780.57x = 328,226.20 × 61,009.04
  4. Step 4: Simplify right side
    218,780.57x = 20,024,763,723.72
  5. Step 5: Solve for x
    x = 20,024,763,723.72/218,780.57
  6. Step 6: Final answer
    x = 91,528.99

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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.