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Finding the Fourth Proportional to 358,861.40, 538,032.90 and 201,138.20

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Solution

The fourth proportional to 358,861.40, 538,032.90 and 201,138.20 is: 301,562.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,861.40 : 538,032.90 = 201,138.20 : x
  2. Step 2: Convert to fraction form
    358,861.40/538,032.90 = 201,138.20/x
  3. Step 3: Cross multiply
    358,861.40x = 538,032.90 × 201,138.20
  4. Step 4: Simplify right side
    358,861.40x = 108,218,969,046.78
  5. Step 5: Solve for x
    x = 108,218,969,046.78/358,861.40
  6. Step 6: Final answer
    x = 301,562.02

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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.