Home / 389,540.20-584,267.10-109,085.80

Finding the Fourth Proportional to 389,540.20, 584,267.10 and 109,085.80

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Solution

The fourth proportional to 389,540.20, 584,267.10 and 109,085.80 is: 163,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,540.20 : 584,267.10 = 109,085.80 : x
  2. Step 2: Convert to fraction form
    389,540.20/584,267.10 = 109,085.80/x
  3. Step 3: Cross multiply
    389,540.20x = 584,267.10 × 109,085.80
  4. Step 4: Simplify right side
    389,540.20x = 63,735,244,017.18
  5. Step 5: Solve for x
    x = 63,735,244,017.18/389,540.20
  6. Step 6: Final answer
    x = 163,616.60

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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.