Home / 217,040.10-325,560.15-76,812.90

Finding the Fourth Proportional to 217,040.10, 325,560.15 and 76,812.90

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Solution

The fourth proportional to 217,040.10, 325,560.15 and 76,812.90 is: 115,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,040.10 : 325,560.15 = 76,812.90 : x
  2. Step 2: Convert to fraction form
    217,040.10/325,560.15 = 76,812.90/x
  3. Step 3: Cross multiply
    217,040.10x = 325,560.15 × 76,812.90
  4. Step 4: Simplify right side
    217,040.10x = 25,007,219,245.94
  5. Step 5: Solve for x
    x = 25,007,219,245.94/217,040.10
  6. Step 6: Final answer
    x = 115,219.35

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1.5x scale

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.