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Finding the Fourth Proportional to 326,602.05, 489,903.11 and 101,981.73

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Solution

The fourth proportional to 326,602.05, 489,903.11 and 101,981.73 is: 152,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,602.05 : 489,903.11 = 101,981.73 : x
  2. Step 2: Convert to fraction form
    326,602.05/489,903.11 = 101,981.73/x
  3. Step 3: Cross multiply
    326,602.05x = 489,903.11 × 101,981.73
  4. Step 4: Simplify right side
    326,602.05x = 49,961,166,180.27
  5. Step 5: Solve for x
    x = 49,961,166,180.27/326,602.05
  6. Step 6: Final answer
    x = 152,972.60

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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.