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Finding the Fourth Proportional to 207,935.90, 311,320.65 and 202,103.90

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Solution

The fourth proportional to 207,935.90, 311,320.65 and 202,103.90 is: 302,589.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,935.90 : 311,320.65 = 202,103.90 : x
  2. Step 2: Convert to fraction form
    207,935.90/311,320.65 = 202,103.90/x
  3. Step 3: Cross multiply
    207,935.90x = 311,320.65 × 202,103.90
  4. Step 4: Simplify right side
    207,935.90x = 62,919,117,515.54
  5. Step 5: Solve for x
    x = 62,919,117,515.54/207,935.90
  6. Step 6: Final answer
    x = 302,589.01

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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.