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Finding the Fourth Proportional to 489,078.96, 733,569.28 and 134,128.68

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Solution

The fourth proportional to 489,078.96, 733,569.28 and 134,128.68 is: 201,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,078.96 : 733,569.28 = 134,128.68 : x
  2. Step 2: Convert to fraction form
    489,078.96/733,569.28 = 134,128.68/x
  3. Step 3: Cross multiply
    489,078.96x = 733,569.28 × 134,128.68
  4. Step 4: Simplify right side
    489,078.96x = 98,392,679,214.95
  5. Step 5: Solve for x
    x = 98,392,679,214.95/489,078.96
  6. Step 6: Final answer
    x = 201,179.54

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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.