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Finding the Fourth Proportional to 320,147.40, 480,245.40 and 95,490.26

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Solution

The fourth proportional to 320,147.40, 480,245.40 and 95,490.26 is: 143,242.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,147.40 : 480,245.40 = 95,490.26 : x
  2. Step 2: Convert to fraction form
    320,147.40/480,245.40 = 95,490.26/x
  3. Step 3: Cross multiply
    320,147.40x = 480,245.40 × 95,490.26
  4. Step 4: Simplify right side
    320,147.40x = 45,858,758,109.80
  5. Step 5: Solve for x
    x = 45,858,758,109.80/320,147.40
  6. Step 6: Final answer
    x = 143,242.64

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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.