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Finding the Fourth Proportional to 207,358.12, 310,851.96 and 80,968.96

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Solution

The fourth proportional to 207,358.12, 310,851.96 and 80,968.96 is: 121,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,358.12 : 310,851.96 = 80,968.96 : x
  2. Step 2: Convert to fraction form
    207,358.12/310,851.96 = 80,968.96/x
  3. Step 3: Cross multiply
    207,358.12x = 310,851.96 × 80,968.96
  4. Step 4: Simplify right side
    207,358.12x = 25,169,359,915.16
  5. Step 5: Solve for x
    x = 25,169,359,915.16/207,358.12
  6. Step 6: Final answer
    x = 121,381.12

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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.