Home / 213,532.20-320,298.30-210,421.80

Finding the Fourth Proportional to 213,532.20, 320,298.30 and 210,421.80

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Solution

The fourth proportional to 213,532.20, 320,298.30 and 210,421.80 is: 315,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,532.20 : 320,298.30 = 210,421.80 : x
  2. Step 2: Convert to fraction form
    213,532.20/320,298.30 = 210,421.80/x
  3. Step 3: Cross multiply
    213,532.20x = 320,298.30 × 210,421.80
  4. Step 4: Simplify right side
    213,532.20x = 67,397,744,822.94
  5. Step 5: Solve for x
    x = 67,397,744,822.94/213,532.20
  6. Step 6: Final answer
    x = 315,632.70

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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.