Home / 312,352.20-468,182.70-172,211.40

Finding the Fourth Proportional to 312,352.20, 468,182.70 and 172,211.40

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Solution

The fourth proportional to 312,352.20, 468,182.70 and 172,211.40 is: 258,126.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,352.20 : 468,182.70 = 172,211.40 : x
  2. Step 2: Convert to fraction form
    312,352.20/468,182.70 = 172,211.40/x
  3. Step 3: Cross multiply
    312,352.20x = 468,182.70 × 172,211.40
  4. Step 4: Simplify right side
    312,352.20x = 80,626,398,222.78
  5. Step 5: Solve for x
    x = 80,626,398,222.78/312,352.20
  6. Step 6: Final answer
    x = 258,126.56

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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.