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Finding the Fourth Proportional to 220,113.10, 330,169.65 and 185,121.10

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Solution

The fourth proportional to 220,113.10, 330,169.65 and 185,121.10 is: 277,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,113.10 : 330,169.65 = 185,121.10 : x
  2. Step 2: Convert to fraction form
    220,113.10/330,169.65 = 185,121.10/x
  3. Step 3: Cross multiply
    220,113.10x = 330,169.65 × 185,121.10
  4. Step 4: Simplify right side
    220,113.10x = 61,121,368,794.62
  5. Step 5: Solve for x
    x = 61,121,368,794.62/220,113.10
  6. Step 6: Final answer
    x = 277,681.65

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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.