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Finding the Fourth Proportional to 218,929.80, 328,394.70 and 185,104.20

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Solution

The fourth proportional to 218,929.80, 328,394.70 and 185,104.20 is: 277,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,929.80 : 328,394.70 = 185,104.20 : x
  2. Step 2: Convert to fraction form
    218,929.80/328,394.70 = 185,104.20/x
  3. Step 3: Cross multiply
    218,929.80x = 328,394.70 × 185,104.20
  4. Step 4: Simplify right side
    218,929.80x = 60,787,238,227.74
  5. Step 5: Solve for x
    x = 60,787,238,227.74/218,929.80
  6. Step 6: Final answer
    x = 277,656.30

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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.