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Finding the Fourth Proportional to 220,511.90, 330,767.85 and 153,811.10

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Solution

The fourth proportional to 220,511.90, 330,767.85 and 153,811.10 is: 230,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,511.90 : 330,767.85 = 153,811.10 : x
  2. Step 2: Convert to fraction form
    220,511.90/330,767.85 = 153,811.10/x
  3. Step 3: Cross multiply
    220,511.90x = 330,767.85 × 153,811.10
  4. Step 4: Simplify right side
    220,511.90x = 50,875,766,853.14
  5. Step 5: Solve for x
    x = 50,875,766,853.14/220,511.90
  6. Step 6: Final answer
    x = 230,716.65

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1.5x scale

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.