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Finding the Fourth Proportional to 320,153.60, 480,249.17 and 120,475.71

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Solution

The fourth proportional to 320,153.60, 480,249.17 and 120,475.71 is: 180,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,153.60 : 480,249.17 = 120,475.71 : x
  2. Step 2: Convert to fraction form
    320,153.60/480,249.17 = 120,475.71/x
  3. Step 3: Cross multiply
    320,153.60x = 480,249.17 × 120,475.71
  4. Step 4: Simplify right side
    320,153.60x = 57,858,359,130.28
  5. Step 5: Solve for x
    x = 57,858,359,130.28/320,153.60
  6. Step 6: Final answer
    x = 180,720.63

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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.