Home / 389,587.20-584,611.20-140,236.80

Finding the Fourth Proportional to 389,587.20, 584,611.20 and 140,236.80

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Solution

The fourth proportional to 389,587.20, 584,611.20 and 140,236.80 is: 210,438.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,587.20 : 584,611.20 = 140,236.80 : x
  2. Step 2: Convert to fraction form
    389,587.20/584,611.20 = 140,236.80/x
  3. Step 3: Cross multiply
    389,587.20x = 584,611.20 × 140,236.80
  4. Step 4: Simplify right side
    389,587.20x = 81,984,003,932.16
  5. Step 5: Solve for x
    x = 81,984,003,932.16/389,587.20
  6. Step 6: Final answer
    x = 210,438.14

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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.