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Finding the Fourth Proportional to 326,506.92, 489,762.81 and 89,862.63

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Solution

The fourth proportional to 326,506.92, 489,762.81 and 89,862.63 is: 134,794.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,506.92 : 489,762.81 = 89,862.63 : x
  2. Step 2: Convert to fraction form
    326,506.92/489,762.81 = 89,862.63/x
  3. Step 3: Cross multiply
    326,506.92x = 489,762.81 × 89,862.63
  4. Step 4: Simplify right side
    326,506.92x = 44,011,374,182.79
  5. Step 5: Solve for x
    x = 44,011,374,182.79/326,506.92
  6. Step 6: Final answer
    x = 134,794.61

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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.