Home / 389,440.20-584,117.10-108,985.80

Finding the Fourth Proportional to 389,440.20, 584,117.10 and 108,985.80

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Solution

The fourth proportional to 389,440.20, 584,117.10 and 108,985.80 is: 163,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,440.20 : 584,117.10 = 108,985.80 : x
  2. Step 2: Convert to fraction form
    389,440.20/584,117.10 = 108,985.80/x
  3. Step 3: Cross multiply
    389,440.20x = 584,117.10 × 108,985.80
  4. Step 4: Simplify right side
    389,440.20x = 63,660,469,437.18
  5. Step 5: Solve for x
    x = 63,660,469,437.18/389,440.20
  6. Step 6: Final answer
    x = 163,466.61

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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.