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Finding the Fourth Proportional to 207,247.80, 310,353.30 and 165,775.80

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Solution

The fourth proportional to 207,247.80, 310,353.30 and 165,775.80 is: 248,249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,247.80 : 310,353.30 = 165,775.80 : x
  2. Step 2: Convert to fraction form
    207,247.80/310,353.30 = 165,775.80/x
  3. Step 3: Cross multiply
    207,247.80x = 310,353.30 × 165,775.80
  4. Step 4: Simplify right side
    207,247.80x = 51,449,066,590.14
  5. Step 5: Solve for x
    x = 51,449,066,590.14/207,247.80
  6. Step 6: Final answer
    x = 248,249.04

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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.