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Finding the Fourth Proportional to 207,942.80, 311,395.80 and 166,470.80

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Solution

The fourth proportional to 207,942.80, 311,395.80 and 166,470.80 is: 249,291.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,942.80 : 311,395.80 = 166,470.80 : x
  2. Step 2: Convert to fraction form
    207,942.80/311,395.80 = 166,470.80/x
  3. Step 3: Cross multiply
    207,942.80x = 311,395.80 × 166,470.80
  4. Step 4: Simplify right side
    207,942.80x = 51,838,307,942.64
  5. Step 5: Solve for x
    x = 51,838,307,942.64/207,942.80
  6. Step 6: Final answer
    x = 249,291.19

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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.