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Finding the Fourth Proportional to 306,762.88, 423,267.70 and 193,520

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Solution

The fourth proportional to 306,762.88, 423,267.70 and 193,520 is: 267,016.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,762.88 : 423,267.70 = 193,520 : x
  2. Step 2: Convert to fraction form
    306,762.88/423,267.70 = 193,520/x
  3. Step 3: Cross multiply
    306,762.88x = 423,267.70 × 193,520
  4. Step 4: Simplify right side
    306,762.88x = 81,910,765,304
  5. Step 5: Solve for x
    x = 81,910,765,304/306,762.88
  6. Step 6: Final answer
    x = 267,016.55

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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.