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Finding the Fourth Proportional to 619,498.32, 928,696.95 and 220,086.42

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Solution

The fourth proportional to 619,498.32, 928,696.95 and 220,086.42 is: 329,934.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,498.32 : 928,696.95 = 220,086.42 : x
  2. Step 2: Convert to fraction form
    619,498.32/928,696.95 = 220,086.42/x
  3. Step 3: Cross multiply
    619,498.32x = 928,696.95 × 220,086.42
  4. Step 4: Simplify right side
    619,498.32x = 204,393,586,990.42
  5. Step 5: Solve for x
    x = 204,393,586,990.42/619,498.32
  6. Step 6: Final answer
    x = 329,934.05

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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.