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Finding the Fourth Proportional to 396,416.76, 546,876.54 and 235,278.60

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Solution

The fourth proportional to 396,416.76, 546,876.54 and 235,278.60 is: 324,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,416.76 : 546,876.54 = 235,278.60 : x
  2. Step 2: Convert to fraction form
    396,416.76/546,876.54 = 235,278.60/x
  3. Step 3: Cross multiply
    396,416.76x = 546,876.54 × 235,278.60
  4. Step 4: Simplify right side
    396,416.76x = 128,668,346,704.04
  5. Step 5: Solve for x
    x = 128,668,346,704.04/396,416.76
  6. Step 6: Final answer
    x = 324,578.47

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1.5x scale

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.