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Finding the Fourth Proportional to 389,344.76, 584,017.68 and 108,861.76

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Solution

The fourth proportional to 389,344.76, 584,017.68 and 108,861.76 is: 163,292.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,344.76 : 584,017.68 = 108,861.76 : x
  2. Step 2: Convert to fraction form
    389,344.76/584,017.68 = 108,861.76/x
  3. Step 3: Cross multiply
    389,344.76x = 584,017.68 × 108,861.76
  4. Step 4: Simplify right side
    389,344.76x = 63,577,192,515.92
  5. Step 5: Solve for x
    x = 63,577,192,515.92/389,344.76
  6. Step 6: Final answer
    x = 163,292.79

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1.5x scale

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.