Home / 231,575.15-347,315.45-81,820.33

Finding the Fourth Proportional to 231,575.15, 347,315.45 and 81,820.33

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Solution

The fourth proportional to 231,575.15, 347,315.45 and 81,820.33 is: 122,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,575.15 : 347,315.45 = 81,820.33 : x
  2. Step 2: Convert to fraction form
    231,575.15/347,315.45 = 81,820.33/x
  3. Step 3: Cross multiply
    231,575.15x = 347,315.45 × 81,820.33
  4. Step 4: Simplify right side
    231,575.15x = 28,417,463,455.71
  5. Step 5: Solve for x
    x = 28,417,463,455.71/231,575.15
  6. Step 6: Final answer
    x = 122,713.78

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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.