Home / 278,231.86-417,196.68-126,345.52

Finding the Fourth Proportional to 278,231.86, 417,196.68 and 126,345.52

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Solution

The fourth proportional to 278,231.86, 417,196.68 and 126,345.52 is: 189,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,231.86 : 417,196.68 = 126,345.52 : x
  2. Step 2: Convert to fraction form
    278,231.86/417,196.68 = 126,345.52/x
  3. Step 3: Cross multiply
    278,231.86x = 417,196.68 × 126,345.52
  4. Step 4: Simplify right side
    278,231.86x = 52,710,931,476.87
  5. Step 5: Solve for x
    x = 52,710,931,476.87/278,231.86
  6. Step 6: Final answer
    x = 189,449.66

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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.