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Finding the Fourth Proportional to 326,184.65, 489,401.52 and 126,645.14

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Solution

The fourth proportional to 326,184.65, 489,401.52 and 126,645.14 is: 190,016.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,184.65 : 489,401.52 = 126,645.14 : x
  2. Step 2: Convert to fraction form
    326,184.65/489,401.52 = 126,645.14/x
  3. Step 3: Cross multiply
    326,184.65x = 489,401.52 × 126,645.14
  4. Step 4: Simplify right side
    326,184.65x = 61,980,324,016.61
  5. Step 5: Solve for x
    x = 61,980,324,016.61/326,184.65
  6. Step 6: Final answer
    x = 190,016.07

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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.