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Finding the Fourth Proportional to 389,758.82, 537,867.16 and 220,003.88

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Solution

The fourth proportional to 389,758.82, 537,867.16 and 220,003.88 is: 303,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,758.82 : 537,867.16 = 220,003.88 : x
  2. Step 2: Convert to fraction form
    389,758.82/537,867.16 = 220,003.88/x
  3. Step 3: Cross multiply
    389,758.82x = 537,867.16 × 220,003.88
  4. Step 4: Simplify right side
    389,758.82x = 118,332,862,124.58
  5. Step 5: Solve for x
    x = 118,332,862,124.58/389,758.82
  6. Step 6: Final answer
    x = 303,605.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.