Home / 215,748.80-323,623.20-137,211.20

Finding the Fourth Proportional to 215,748.80, 323,623.20 and 137,211.20

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Solution

The fourth proportional to 215,748.80, 323,623.20 and 137,211.20 is: 205,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,748.80 : 323,623.20 = 137,211.20 : x
  2. Step 2: Convert to fraction form
    215,748.80/323,623.20 = 137,211.20/x
  3. Step 3: Cross multiply
    215,748.80x = 323,623.20 × 137,211.20
  4. Step 4: Simplify right side
    215,748.80x = 44,404,727,619.84
  5. Step 5: Solve for x
    x = 44,404,727,619.84/215,748.80
  6. Step 6: Final answer
    x = 205,816.80

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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.