Home / 214,440.40-321,814.20-89,870.80

Finding the Fourth Proportional to 214,440.40, 321,814.20 and 89,870.80

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Solution

The fourth proportional to 214,440.40, 321,814.20 and 89,870.80 is: 134,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,440.40 : 321,814.20 = 89,870.80 : x
  2. Step 2: Convert to fraction form
    214,440.40/321,814.20 = 89,870.80/x
  3. Step 3: Cross multiply
    214,440.40x = 321,814.20 × 89,870.80
  4. Step 4: Simplify right side
    214,440.40x = 28,921,699,605.36
  5. Step 5: Solve for x
    x = 28,921,699,605.36/214,440.40
  6. Step 6: Final answer
    x = 134,870.57

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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.