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Finding the Fourth Proportional to 320,189.60, 480,308.16 and 95,532.32

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Solution

The fourth proportional to 320,189.60, 480,308.16 and 95,532.32 is: 143,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,189.60 : 480,308.16 = 95,532.32 : x
  2. Step 2: Convert to fraction form
    320,189.60/480,308.16 = 95,532.32/x
  3. Step 3: Cross multiply
    320,189.60x = 480,308.16 × 95,532.32
  4. Step 4: Simplify right side
    320,189.60x = 45,884,952,839.73
  5. Step 5: Solve for x
    x = 45,884,952,839.73/320,189.60
  6. Step 6: Final answer
    x = 143,305.57

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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.