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Finding the Fourth Proportional to 396,438.71, 547,112.07 and 224,356.23

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Solution

The fourth proportional to 396,438.71, 547,112.07 and 224,356.23 is: 309,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,438.71 : 547,112.07 = 224,356.23 : x
  2. Step 2: Convert to fraction form
    396,438.71/547,112.07 = 224,356.23/x
  3. Step 3: Cross multiply
    396,438.71x = 547,112.07 × 224,356.23
  4. Step 4: Simplify right side
    396,438.71x = 122,748,001,412.70
  5. Step 5: Solve for x
    x = 122,748,001,412.70/396,438.71
  6. Step 6: Final answer
    x = 309,626.68

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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.