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Finding the Fourth Proportional to 291,225.70, 436,889.85 and 120,446.92

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Solution

The fourth proportional to 291,225.70, 436,889.85 and 120,446.92 is: 180,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,225.70 : 436,889.85 = 120,446.92 : x
  2. Step 2: Convert to fraction form
    291,225.70/436,889.85 = 120,446.92/x
  3. Step 3: Cross multiply
    291,225.70x = 436,889.85 × 120,446.92
  4. Step 4: Simplify right side
    291,225.70x = 52,622,036,811.76
  5. Step 5: Solve for x
    x = 52,622,036,811.76/291,225.70
  6. Step 6: Final answer
    x = 180,691.60

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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.