Home / 213,594.38-320,391.88-87,234.65

Finding the Fourth Proportional to 213,594.38, 320,391.88 and 87,234.65

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Solution

The fourth proportional to 213,594.38, 320,391.88 and 87,234.65 is: 130,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,594.38 : 320,391.88 = 87,234.65 : x
  2. Step 2: Convert to fraction form
    213,594.38/320,391.88 = 87,234.65/x
  3. Step 3: Cross multiply
    213,594.38x = 320,391.88 × 87,234.65
  4. Step 4: Simplify right side
    213,594.38x = 27,949,273,591.96
  5. Step 5: Solve for x
    x = 27,949,273,591.96/213,594.38
  6. Step 6: Final answer
    x = 130,852.10

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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.