Home / 221,661.28-306,006.64-131,044.96

Finding the Fourth Proportional to 221,661.28, 306,006.64 and 131,044.96

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Solution

The fourth proportional to 221,661.28, 306,006.64 and 131,044.96 is: 180,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,661.28 : 306,006.64 = 131,044.96 : x
  2. Step 2: Convert to fraction form
    221,661.28/306,006.64 = 131,044.96/x
  3. Step 3: Cross multiply
    221,661.28x = 306,006.64 × 131,044.96
  4. Step 4: Simplify right side
    221,661.28x = 40,100,627,898.53
  5. Step 5: Solve for x
    x = 40,100,627,898.53/221,661.28
  6. Step 6: Final answer
    x = 180,909.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.