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Finding the Fourth Proportional to 471,531.20, 707,296.80 and 171,912.20

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Solution

The fourth proportional to 471,531.20, 707,296.80 and 171,912.20 is: 257,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,531.20 : 707,296.80 = 171,912.20 : x
  2. Step 2: Convert to fraction form
    471,531.20/707,296.80 = 171,912.20/x
  3. Step 3: Cross multiply
    471,531.20x = 707,296.80 × 171,912.20
  4. Step 4: Simplify right side
    471,531.20x = 121,592,948,940.96
  5. Step 5: Solve for x
    x = 121,592,948,940.96/471,531.20
  6. Step 6: Final answer
    x = 257,868.30

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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.