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Finding the Fourth Proportional to 396,565.74, 546,846.66 and 235,389.78

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Solution

The fourth proportional to 396,565.74, 546,846.66 and 235,389.78 is: 324,592.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,565.74 : 546,846.66 = 235,389.78 : x
  2. Step 2: Convert to fraction form
    396,565.74/546,846.66 = 235,389.78/x
  3. Step 3: Cross multiply
    396,565.74x = 546,846.66 × 235,389.78
  4. Step 4: Simplify right side
    396,565.74x = 128,722,114,991.14
  5. Step 5: Solve for x
    x = 128,722,114,991.14/396,565.74
  6. Step 6: Final answer
    x = 324,592.12

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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.