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Finding the Fourth Proportional to 272,452.60, 408,630.30 and 172,433.80

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Solution

The fourth proportional to 272,452.60, 408,630.30 and 172,433.80 is: 258,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,452.60 : 408,630.30 = 172,433.80 : x
  2. Step 2: Convert to fraction form
    272,452.60/408,630.30 = 172,433.80/x
  3. Step 3: Cross multiply
    272,452.60x = 408,630.30 × 172,433.80
  4. Step 4: Simplify right side
    272,452.60x = 70,461,675,424.14
  5. Step 5: Solve for x
    x = 70,461,675,424.14/272,452.60
  6. Step 6: Final answer
    x = 258,619.94

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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.