Home / 391,723.80-587,780.10-223,373.40

Finding the Fourth Proportional to 391,723.80, 587,780.10 and 223,373.40

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Solution

The fourth proportional to 391,723.80, 587,780.10 and 223,373.40 is: 335,170.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,723.80 : 587,780.10 = 223,373.40 : x
  2. Step 2: Convert to fraction form
    391,723.80/587,780.10 = 223,373.40/x
  3. Step 3: Cross multiply
    391,723.80x = 587,780.10 × 223,373.40
  4. Step 4: Simplify right side
    391,723.80x = 131,294,439,389.34
  5. Step 5: Solve for x
    x = 131,294,439,389.34/391,723.80
  6. Step 6: Final answer
    x = 335,170.95

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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.