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Finding the Fourth Proportional to 326,541.60, 489,783.60 and 89,863.20

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Solution

The fourth proportional to 326,541.60, 489,783.60 and 89,863.20 is: 134,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,541.60 : 489,783.60 = 89,863.20 : x
  2. Step 2: Convert to fraction form
    326,541.60/489,783.60 = 89,863.20/x
  3. Step 3: Cross multiply
    326,541.60x = 489,783.60 × 89,863.20
  4. Step 4: Simplify right side
    326,541.60x = 44,013,521,603.52
  5. Step 5: Solve for x
    x = 44,013,521,603.52/326,541.60
  6. Step 6: Final answer
    x = 134,786.87

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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.