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Finding the Fourth Proportional to 396,000.80, 592,964.40 and 290,247.20

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Solution

The fourth proportional to 396,000.80, 592,964.40 and 290,247.20 is: 434,610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,000.80 : 592,964.40 = 290,247.20 : x
  2. Step 2: Convert to fraction form
    396,000.80/592,964.40 = 290,247.20/x
  3. Step 3: Cross multiply
    396,000.80x = 592,964.40 × 290,247.20
  4. Step 4: Simplify right side
    396,000.80x = 172,106,256,799.68
  5. Step 5: Solve for x
    x = 172,106,256,799.68/396,000.80
  6. Step 6: Final answer
    x = 434,610.88

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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.