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Finding the Fourth Proportional to 185,927.70, 278,891.55 and 172,805.70

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Solution

The fourth proportional to 185,927.70, 278,891.55 and 172,805.70 is: 259,208.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,927.70 : 278,891.55 = 172,805.70 : x
  2. Step 2: Convert to fraction form
    185,927.70/278,891.55 = 172,805.70/x
  3. Step 3: Cross multiply
    185,927.70x = 278,891.55 × 172,805.70
  4. Step 4: Simplify right side
    185,927.70x = 48,194,049,521.84
  5. Step 5: Solve for x
    x = 48,194,049,521.84/185,927.70
  6. Step 6: Final answer
    x = 259,208.55

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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.