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Finding the Fourth Proportional to 396,679.05, 547,280.28 and 253,522.89

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Solution

The fourth proportional to 396,679.05, 547,280.28 and 253,522.89 is: 349,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,679.05 : 547,280.28 = 253,522.89 : x
  2. Step 2: Convert to fraction form
    396,679.05/547,280.28 = 253,522.89/x
  3. Step 3: Cross multiply
    396,679.05x = 547,280.28 × 253,522.89
  4. Step 4: Simplify right side
    396,679.05x = 138,748,078,225.61
  5. Step 5: Solve for x
    x = 138,748,078,225.61/396,679.05
  6. Step 6: Final answer
    x = 349,774.15

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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.