Home / 389,586.60-584,402.04-109,125.72

Finding the Fourth Proportional to 389,586.60, 584,402.04 and 109,125.72

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Solution

The fourth proportional to 389,586.60, 584,402.04 and 109,125.72 is: 163,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,586.60 : 584,402.04 = 109,125.72 : x
  2. Step 2: Convert to fraction form
    389,586.60/584,402.04 = 109,125.72/x
  3. Step 3: Cross multiply
    389,586.60x = 584,402.04 × 109,125.72
  4. Step 4: Simplify right side
    389,586.60x = 63,773,293,384.47
  5. Step 5: Solve for x
    x = 63,773,293,384.47/389,586.60
  6. Step 6: Final answer
    x = 163,694.78

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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.