Home / 261,280.43-391,826.51-90,455.74

Finding the Fourth Proportional to 261,280.43, 391,826.51 and 90,455.74

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Solution

The fourth proportional to 261,280.43, 391,826.51 and 90,455.74 is: 135,651.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,280.43 : 391,826.51 = 90,455.74 : x
  2. Step 2: Convert to fraction form
    261,280.43/391,826.51 = 90,455.74/x
  3. Step 3: Cross multiply
    261,280.43x = 391,826.51 × 90,455.74
  4. Step 4: Simplify right side
    261,280.43x = 35,442,956,329.85
  5. Step 5: Solve for x
    x = 35,442,956,329.85/261,280.43
  6. Step 6: Final answer
    x = 135,651.02

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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.