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Finding the Fourth Proportional to 149,279.40, 223,919.10 and 90,230.40

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Solution

The fourth proportional to 149,279.40, 223,919.10 and 90,230.40 is: 135,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,279.40 : 223,919.10 = 90,230.40 : x
  2. Step 2: Convert to fraction form
    149,279.40/223,919.10 = 90,230.40/x
  3. Step 3: Cross multiply
    149,279.40x = 223,919.10 × 90,230.40
  4. Step 4: Simplify right side
    149,279.40x = 20,204,309,960.64
  5. Step 5: Solve for x
    x = 20,204,309,960.64/149,279.40
  6. Step 6: Final answer
    x = 135,345.60

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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.