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Finding the Fourth Proportional to 291,576.20, 435,766.76 and 212,856.20

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Solution

The fourth proportional to 291,576.20, 435,766.76 and 212,856.20 is: 318,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,576.20 : 435,766.76 = 212,856.20 : x
  2. Step 2: Convert to fraction form
    291,576.20/435,766.76 = 212,856.20/x
  3. Step 3: Cross multiply
    291,576.20x = 435,766.76 × 212,856.20
  4. Step 4: Simplify right side
    291,576.20x = 92,755,656,619.91
  5. Step 5: Solve for x
    x = 92,755,656,619.91/291,576.20
  6. Step 6: Final answer
    x = 318,118.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.