Home / 389,022.75-583,534.13-108,540

Finding the Fourth Proportional to 389,022.75, 583,534.13 and 108,540

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Solution

The fourth proportional to 389,022.75, 583,534.13 and 108,540 is: 162,810

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,022.75 : 583,534.13 = 108,540 : x
  2. Step 2: Convert to fraction form
    389,022.75/583,534.13 = 108,540/x
  3. Step 3: Cross multiply
    389,022.75x = 583,534.13 × 108,540
  4. Step 4: Simplify right side
    389,022.75x = 63,336,793,927.50
  5. Step 5: Solve for x
    x = 63,336,793,927.50/389,022.75
  6. Step 6: Final answer
    x = 162,810

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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.