Home / 214,535.80-321,803.70-56,780.20

Finding the Fourth Proportional to 214,535.80, 321,803.70 and 56,780.20

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Solution

The fourth proportional to 214,535.80, 321,803.70 and 56,780.20 is: 85,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,535.80 : 321,803.70 = 56,780.20 : x
  2. Step 2: Convert to fraction form
    214,535.80/321,803.70 = 56,780.20/x
  3. Step 3: Cross multiply
    214,535.80x = 321,803.70 × 56,780.20
  4. Step 4: Simplify right side
    214,535.80x = 18,272,078,446.74
  5. Step 5: Solve for x
    x = 18,272,078,446.74/214,535.80
  6. Step 6: Final answer
    x = 85,170.30

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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.