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Finding the Fourth Proportional to 291,062.56, 436,593.84 and 80,700.49

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Solution

The fourth proportional to 291,062.56, 436,593.84 and 80,700.49 is: 121,050.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,062.56 : 436,593.84 = 80,700.49 : x
  2. Step 2: Convert to fraction form
    291,062.56/436,593.84 = 80,700.49/x
  3. Step 3: Cross multiply
    291,062.56x = 436,593.84 × 80,700.49
  4. Step 4: Simplify right side
    291,062.56x = 35,233,336,818.98
  5. Step 5: Solve for x
    x = 35,233,336,818.98/291,062.56
  6. Step 6: Final answer
    x = 121,050.74

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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.