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Finding the Fourth Proportional to 207,266.20, 310,899.30 and 191,519.80

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Solution

The fourth proportional to 207,266.20, 310,899.30 and 191,519.80 is: 287,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,266.20 : 310,899.30 = 191,519.80 : x
  2. Step 2: Convert to fraction form
    207,266.20/310,899.30 = 191,519.80/x
  3. Step 3: Cross multiply
    207,266.20x = 310,899.30 × 191,519.80
  4. Step 4: Simplify right side
    207,266.20x = 59,543,371,756.14
  5. Step 5: Solve for x
    x = 59,543,371,756.14/207,266.20
  6. Step 6: Final answer
    x = 287,279.70

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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.