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Finding the Fourth Proportional to 391,567.65, 587,406.15 and 166,926.30

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Solution

The fourth proportional to 391,567.65, 587,406.15 and 166,926.30 is: 250,412.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,567.65 : 587,406.15 = 166,926.30 : x
  2. Step 2: Convert to fraction form
    391,567.65/587,406.15 = 166,926.30/x
  3. Step 3: Cross multiply
    391,567.65x = 587,406.15 × 166,926.30
  4. Step 4: Simplify right side
    391,567.65x = 98,053,535,216.75
  5. Step 5: Solve for x
    x = 98,053,535,216.75/391,567.65
  6. Step 6: Final answer
    x = 250,412.76

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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.