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Finding the Fourth Proportional to 326,007.87, 489,127.50 and 146,079.15

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Solution

The fourth proportional to 326,007.87, 489,127.50 and 146,079.15 is: 219,170.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,007.87 : 489,127.50 = 146,079.15 : x
  2. Step 2: Convert to fraction form
    326,007.87/489,127.50 = 146,079.15/x
  3. Step 3: Cross multiply
    326,007.87x = 489,127.50 × 146,079.15
  4. Step 4: Simplify right side
    326,007.87x = 71,451,329,441.63
  5. Step 5: Solve for x
    x = 71,451,329,441.63/326,007.87
  6. Step 6: Final answer
    x = 219,170.57

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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.