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Finding the Fourth Proportional to 207,612.90, 311,419.35 and 187,273.80

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Solution

The fourth proportional to 207,612.90, 311,419.35 and 187,273.80 is: 280,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,612.90 : 311,419.35 = 187,273.80 : x
  2. Step 2: Convert to fraction form
    207,612.90/311,419.35 = 187,273.80/x
  3. Step 3: Cross multiply
    207,612.90x = 311,419.35 × 187,273.80
  4. Step 4: Simplify right side
    207,612.90x = 58,320,685,068.03
  5. Step 5: Solve for x
    x = 58,320,685,068.03/207,612.90
  6. Step 6: Final answer
    x = 280,910.70

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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.