Home / 207,899.60-311,849.40-74,784.20

Finding the Fourth Proportional to 207,899.60, 311,849.40 and 74,784.20

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Solution

The fourth proportional to 207,899.60, 311,849.40 and 74,784.20 is: 112,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,899.60 : 311,849.40 = 74,784.20 : x
  2. Step 2: Convert to fraction form
    207,899.60/311,849.40 = 74,784.20/x
  3. Step 3: Cross multiply
    207,899.60x = 311,849.40 × 74,784.20
  4. Step 4: Simplify right side
    207,899.60x = 23,321,407,899.48
  5. Step 5: Solve for x
    x = 23,321,407,899.48/207,899.60
  6. Step 6: Final answer
    x = 112,176.30

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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.