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Finding the Fourth Proportional to 384,204.61, 576,712.73 and 215,868.79

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Solution

The fourth proportional to 384,204.61, 576,712.73 and 215,868.79 is: 324,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,204.61 : 576,712.73 = 215,868.79 : x
  2. Step 2: Convert to fraction form
    384,204.61/576,712.73 = 215,868.79/x
  3. Step 3: Cross multiply
    384,204.61x = 576,712.73 × 215,868.79
  4. Step 4: Simplify right side
    384,204.61x = 124,494,279,202.70
  5. Step 5: Solve for x
    x = 124,494,279,202.70/384,204.61
  6. Step 6: Final answer
    x = 324,031.20

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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.