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Finding the Fourth Proportional to 442,684.20, 663,939.90 and 147,196.20

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Solution

The fourth proportional to 442,684.20, 663,939.90 and 147,196.20 is: 220,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,684.20 : 663,939.90 = 147,196.20 : x
  2. Step 2: Convert to fraction form
    442,684.20/663,939.90 = 147,196.20/x
  3. Step 3: Cross multiply
    442,684.20x = 663,939.90 × 147,196.20
  4. Step 4: Simplify right side
    442,684.20x = 97,729,430,308.38
  5. Step 5: Solve for x
    x = 97,729,430,308.38/442,684.20
  6. Step 6: Final answer
    x = 220,765.57

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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.