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Finding the Fourth Proportional to 207,774.70, 310,884.45 and 137,790.70

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Solution

The fourth proportional to 207,774.70, 310,884.45 and 137,790.70 is: 206,170.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,774.70 : 310,884.45 = 137,790.70 : x
  2. Step 2: Convert to fraction form
    207,774.70/310,884.45 = 137,790.70/x
  3. Step 3: Cross multiply
    207,774.70x = 310,884.45 × 137,790.70
  4. Step 4: Simplify right side
    207,774.70x = 42,836,985,984.62
  5. Step 5: Solve for x
    x = 42,836,985,984.62/207,774.70
  6. Step 6: Final answer
    x = 206,170.37

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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.