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Finding the Fourth Proportional to 326,275.60, 489,591.72 and 126,603.82

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Solution

The fourth proportional to 326,275.60, 489,591.72 and 126,603.82 is: 189,974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,275.60 : 489,591.72 = 126,603.82 : x
  2. Step 2: Convert to fraction form
    326,275.60/489,591.72 = 126,603.82/x
  3. Step 3: Cross multiply
    326,275.60x = 489,591.72 × 126,603.82
  4. Step 4: Simplify right side
    326,275.60x = 61,984,181,992.37
  5. Step 5: Solve for x
    x = 61,984,181,992.37/326,275.60
  6. Step 6: Final answer
    x = 189,974.92

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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.