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Finding the Fourth Proportional to 396,064.10, 594,096.15 and 129,760.40

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Solution

The fourth proportional to 396,064.10, 594,096.15 and 129,760.40 is: 194,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,064.10 : 594,096.15 = 129,760.40 : x
  2. Step 2: Convert to fraction form
    396,064.10/594,096.15 = 129,760.40/x
  3. Step 3: Cross multiply
    396,064.10x = 594,096.15 × 129,760.40
  4. Step 4: Simplify right side
    396,064.10x = 77,090,154,062.46
  5. Step 5: Solve for x
    x = 77,090,154,062.46/396,064.10
  6. Step 6: Final answer
    x = 194,640.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.