Home / 309,717.22-464,570.34-85,076.78

Finding the Fourth Proportional to 309,717.22, 464,570.34 and 85,076.78

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Solution

The fourth proportional to 309,717.22, 464,570.34 and 85,076.78 is: 127,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,717.22 : 464,570.34 = 85,076.78 : x
  2. Step 2: Convert to fraction form
    309,717.22/464,570.34 = 85,076.78/x
  3. Step 3: Cross multiply
    309,717.22x = 464,570.34 × 85,076.78
  4. Step 4: Simplify right side
    309,717.22x = 39,524,148,610.71
  5. Step 5: Solve for x
    x = 39,524,148,610.71/309,717.22
  6. Step 6: Final answer
    x = 127,613.66

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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.