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Finding the Fourth Proportional to 396,218.70, 594,328.05 and 143,620.20

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Solution

The fourth proportional to 396,218.70, 594,328.05 and 143,620.20 is: 215,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,218.70 : 594,328.05 = 143,620.20 : x
  2. Step 2: Convert to fraction form
    396,218.70/594,328.05 = 143,620.20/x
  3. Step 3: Cross multiply
    396,218.70x = 594,328.05 × 143,620.20
  4. Step 4: Simplify right side
    396,218.70x = 85,357,513,406.61
  5. Step 5: Solve for x
    x = 85,357,513,406.61/396,218.70
  6. Step 6: Final answer
    x = 215,430.30

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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.