Home / 289,983.60-435,024-90,257.04

Finding the Fourth Proportional to 289,983.60, 435,024 and 90,257.04

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Solution

The fourth proportional to 289,983.60, 435,024 and 90,257.04 is: 135,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,983.60 : 435,024 = 90,257.04 : x
  2. Step 2: Convert to fraction form
    289,983.60/435,024 = 90,257.04/x
  3. Step 3: Cross multiply
    289,983.60x = 435,024 × 90,257.04
  4. Step 4: Simplify right side
    289,983.60x = 39,263,978,568.96
  5. Step 5: Solve for x
    x = 39,263,978,568.96/289,983.60
  6. Step 6: Final answer
    x = 135,400.69

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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.