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Finding the Fourth Proportional to 279,255.16, 385,367.88 and 151,927.84

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Solution

The fourth proportional to 279,255.16, 385,367.88 and 151,927.84 is: 209,658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,255.16 : 385,367.88 = 151,927.84 : x
  2. Step 2: Convert to fraction form
    279,255.16/385,367.88 = 151,927.84/x
  3. Step 3: Cross multiply
    279,255.16x = 385,367.88 × 151,927.84
  4. Step 4: Simplify right side
    279,255.16x = 58,548,109,613.78
  5. Step 5: Solve for x
    x = 58,548,109,613.78/279,255.16
  6. Step 6: Final answer
    x = 209,658.11

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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.