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Finding the Fourth Proportional to 396,218.79, 547,187.40 and 370,827.72

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Solution

The fourth proportional to 396,218.79, 547,187.40 and 370,827.72 is: 512,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,218.79 : 547,187.40 = 370,827.72 : x
  2. Step 2: Convert to fraction form
    396,218.79/547,187.40 = 370,827.72/x
  3. Step 3: Cross multiply
    396,218.79x = 547,187.40 × 370,827.72
  4. Step 4: Simplify right side
    396,218.79x = 202,912,255,954.73
  5. Step 5: Solve for x
    x = 202,912,255,954.73/396,218.79
  6. Step 6: Final answer
    x = 512,121.74

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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.