Home / 205,316.85-307,975.26-77,257.20

Finding the Fourth Proportional to 205,316.85, 307,975.26 and 77,257.20

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Solution

The fourth proportional to 205,316.85, 307,975.26 and 77,257.20 is: 115,885.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,316.85 : 307,975.26 = 77,257.20 : x
  2. Step 2: Convert to fraction form
    205,316.85/307,975.26 = 77,257.20/x
  3. Step 3: Cross multiply
    205,316.85x = 307,975.26 × 77,257.20
  4. Step 4: Simplify right side
    205,316.85x = 23,793,306,256.87
  5. Step 5: Solve for x
    x = 23,793,306,256.87/205,316.85
  6. Step 6: Final answer
    x = 115,885.79

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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.