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Finding the Fourth Proportional to 291,609.52, 435,816.48 and 212,889.52

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Solution

The fourth proportional to 291,609.52, 435,816.48 and 212,889.52 is: 318,167.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,609.52 : 435,816.48 = 212,889.52 : x
  2. Step 2: Convert to fraction form
    291,609.52/435,816.48 = 212,889.52/x
  3. Step 3: Cross multiply
    291,609.52x = 435,816.48 × 212,889.52
  4. Step 4: Simplify right side
    291,609.52x = 92,780,761,235.29
  5. Step 5: Solve for x
    x = 92,780,761,235.29/291,609.52
  6. Step 6: Final answer
    x = 318,167.81

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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.