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Finding the Fourth Proportional to 229,479.95, 343,927.85 and 129,695.78

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Solution

The fourth proportional to 229,479.95, 343,927.85 and 129,695.78 is: 194,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,479.95 : 343,927.85 = 129,695.78 : x
  2. Step 2: Convert to fraction form
    229,479.95/343,927.85 = 129,695.78/x
  3. Step 3: Cross multiply
    229,479.95x = 343,927.85 × 129,695.78
  4. Step 4: Simplify right side
    229,479.95x = 44,605,988,401.35
  5. Step 5: Solve for x
    x = 44,605,988,401.35/229,479.95
  6. Step 6: Final answer
    x = 194,378.59

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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.