Home / 354,239.51-531,475.92-143,820.95

Finding the Fourth Proportional to 354,239.51, 531,475.92 and 143,820.95

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Solution

The fourth proportional to 354,239.51, 531,475.92 and 143,820.95 is: 215,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,239.51 : 531,475.92 = 143,820.95 : x
  2. Step 2: Convert to fraction form
    354,239.51/531,475.92 = 143,820.95/x
  3. Step 3: Cross multiply
    354,239.51x = 531,475.92 × 143,820.95
  4. Step 4: Simplify right side
    354,239.51x = 76,437,371,716.52
  5. Step 5: Solve for x
    x = 76,437,371,716.52/354,239.51
  6. Step 6: Final answer
    x = 215,778.79

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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.