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Finding the Fourth Proportional to 207,949.40, 311,340.90 and 202,117.40

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Solution

The fourth proportional to 207,949.40, 311,340.90 and 202,117.40 is: 302,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,949.40 : 311,340.90 = 202,117.40 : x
  2. Step 2: Convert to fraction form
    207,949.40/311,340.90 = 202,117.40/x
  3. Step 3: Cross multiply
    207,949.40x = 311,340.90 × 202,117.40
  4. Step 4: Simplify right side
    207,949.40x = 62,927,413,221.66
  5. Step 5: Solve for x
    x = 62,927,413,221.66/207,949.40
  6. Step 6: Final answer
    x = 302,609.26

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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.