Home / 289,928.86-434,789.10-100,337.78

Finding the Fourth Proportional to 289,928.86, 434,789.10 and 100,337.78

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Solution

The fourth proportional to 289,928.86, 434,789.10 and 100,337.78 is: 150,470.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,928.86 : 434,789.10 = 100,337.78 : x
  2. Step 2: Convert to fraction form
    289,928.86/434,789.10 = 100,337.78/x
  3. Step 3: Cross multiply
    289,928.86x = 434,789.10 × 100,337.78
  4. Step 4: Simplify right side
    289,928.86x = 43,625,773,062.20
  5. Step 5: Solve for x
    x = 43,625,773,062.20/289,928.86
  6. Step 6: Final answer
    x = 150,470.61

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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.