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Finding the Fourth Proportional to 231,812.60, 347,718.90 and 113,559.80

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Solution

The fourth proportional to 231,812.60, 347,718.90 and 113,559.80 is: 170,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,812.60 : 347,718.90 = 113,559.80 : x
  2. Step 2: Convert to fraction form
    231,812.60/347,718.90 = 113,559.80/x
  3. Step 3: Cross multiply
    231,812.60x = 347,718.90 × 113,559.80
  4. Step 4: Simplify right side
    231,812.60x = 39,486,888,740.22
  5. Step 5: Solve for x
    x = 39,486,888,740.22/231,812.60
  6. Step 6: Final answer
    x = 170,339.70

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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.