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Finding the Fourth Proportional to 322,434.88, 483,651.74 and 85,777.56

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Solution

The fourth proportional to 322,434.88, 483,651.74 and 85,777.56 is: 128,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,434.88 : 483,651.74 = 85,777.56 : x
  2. Step 2: Convert to fraction form
    322,434.88/483,651.74 = 85,777.56/x
  3. Step 3: Cross multiply
    322,434.88x = 483,651.74 × 85,777.56
  4. Step 4: Simplify right side
    322,434.88x = 41,486,466,146.95
  5. Step 5: Solve for x
    x = 41,486,466,146.95/322,434.88
  6. Step 6: Final answer
    x = 128,666.19

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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.