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Finding the Fourth Proportional to 231,873.60, 347,810.40 and 217,876.80

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Solution

The fourth proportional to 231,873.60, 347,810.40 and 217,876.80 is: 326,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,873.60 : 347,810.40 = 217,876.80 : x
  2. Step 2: Convert to fraction form
    231,873.60/347,810.40 = 217,876.80/x
  3. Step 3: Cross multiply
    231,873.60x = 347,810.40 × 217,876.80
  4. Step 4: Simplify right side
    231,873.60x = 75,779,816,958.72
  5. Step 5: Solve for x
    x = 75,779,816,958.72/231,873.60
  6. Step 6: Final answer
    x = 326,815.20

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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.