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Finding the Fourth Proportional to 207,308.30, 310,585.19 and 143,994.65

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Solution

The fourth proportional to 207,308.30, 310,585.19 and 143,994.65 is: 215,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,308.30 : 310,585.19 = 143,994.65 : x
  2. Step 2: Convert to fraction form
    207,308.30/310,585.19 = 143,994.65/x
  3. Step 3: Cross multiply
    207,308.30x = 310,585.19 × 143,994.65
  4. Step 4: Simplify right side
    207,308.30x = 44,722,603,456.33
  5. Step 5: Solve for x
    x = 44,722,603,456.33/207,308.30
  6. Step 6: Final answer
    x = 215,729.93

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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.