Home / 389,853.13-584,715.61-137,074.21

Finding the Fourth Proportional to 389,853.13, 584,715.61 and 137,074.21

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Solution

The fourth proportional to 389,853.13, 584,715.61 and 137,074.21 is: 205,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,853.13 : 584,715.61 = 137,074.21 : x
  2. Step 2: Convert to fraction form
    389,853.13/584,715.61 = 137,074.21/x
  3. Step 3: Cross multiply
    389,853.13x = 584,715.61 × 137,074.21
  4. Step 4: Simplify right side
    389,853.13x = 80,149,430,315.42
  5. Step 5: Solve for x
    x = 80,149,430,315.42/389,853.13
  6. Step 6: Final answer
    x = 205,588.78

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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.