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Finding the Fourth Proportional to 436,258.90, 654,396.54 and 136,732.83

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Solution

The fourth proportional to 436,258.90, 654,396.54 and 136,732.83 is: 205,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,258.90 : 654,396.54 = 136,732.83 : x
  2. Step 2: Convert to fraction form
    436,258.90/654,396.54 = 136,732.83/x
  3. Step 3: Cross multiply
    436,258.90x = 654,396.54 × 136,732.83
  4. Step 4: Simplify right side
    436,258.90x = 89,477,490,856.41
  5. Step 5: Solve for x
    x = 89,477,490,856.41/436,258.90
  6. Step 6: Final answer
    x = 205,101.81

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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.