Home / 209,923.80-314,770.14-143,439

Finding the Fourth Proportional to 209,923.80, 314,770.14 and 143,439

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Solution

The fourth proportional to 209,923.80, 314,770.14 and 143,439 is: 215,079.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,923.80 : 314,770.14 = 143,439 : x
  2. Step 2: Convert to fraction form
    209,923.80/314,770.14 = 143,439/x
  3. Step 3: Cross multiply
    209,923.80x = 314,770.14 × 143,439
  4. Step 4: Simplify right side
    209,923.80x = 45,150,314,111.46
  5. Step 5: Solve for x
    x = 45,150,314,111.46/209,923.80
  6. Step 6: Final answer
    x = 215,079.54

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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.