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Finding the Fourth Proportional to 231,881.20, 347,821.80 and 179,328.40

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Solution

The fourth proportional to 231,881.20, 347,821.80 and 179,328.40 is: 268,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,881.20 : 347,821.80 = 179,328.40 : x
  2. Step 2: Convert to fraction form
    231,881.20/347,821.80 = 179,328.40/x
  3. Step 3: Cross multiply
    231,881.20x = 347,821.80 × 179,328.40
  4. Step 4: Simplify right side
    231,881.20x = 62,374,326,879.12
  5. Step 5: Solve for x
    x = 62,374,326,879.12/231,881.20
  6. Step 6: Final answer
    x = 268,992.60

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1.5x scale

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.