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Finding the Fourth Proportional to 207,080.27, 310,620.41 and 66,859.55

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Solution

The fourth proportional to 207,080.27, 310,620.41 and 66,859.55 is: 100,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,080.27 : 310,620.41 = 66,859.55 : x
  2. Step 2: Convert to fraction form
    207,080.27/310,620.41 = 66,859.55/x
  3. Step 3: Cross multiply
    207,080.27x = 310,620.41 × 66,859.55
  4. Step 4: Simplify right side
    207,080.27x = 20,767,938,946.02
  5. Step 5: Solve for x
    x = 20,767,938,946.02/207,080.27
  6. Step 6: Final answer
    x = 100,289.32

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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.