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Finding the Fourth Proportional to 326,330.92, 489,501.78 and 89,672.14

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Solution

The fourth proportional to 326,330.92, 489,501.78 and 89,672.14 is: 134,509.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,330.92 : 489,501.78 = 89,672.14 : x
  2. Step 2: Convert to fraction form
    326,330.92/489,501.78 = 89,672.14/x
  3. Step 3: Cross multiply
    326,330.92x = 489,501.78 × 89,672.14
  4. Step 4: Simplify right side
    326,330.92x = 43,894,672,146.41
  5. Step 5: Solve for x
    x = 43,894,672,146.41/326,330.92
  6. Step 6: Final answer
    x = 134,509.69

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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.