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Finding the Fourth Proportional to 644,320, 966,618.24 and 250,336

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Solution

The fourth proportional to 644,320, 966,618.24 and 250,336 is: 375,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,320 : 966,618.24 = 250,336 : x
  2. Step 2: Convert to fraction form
    644,320/966,618.24 = 250,336/x
  3. Step 3: Cross multiply
    644,320x = 966,618.24 × 250,336
  4. Step 4: Simplify right side
    644,320x = 241,979,343,728.64
  5. Step 5: Solve for x
    x = 241,979,343,728.64/644,320
  6. Step 6: Final answer
    x = 375,557.71

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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.