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Finding the Fourth Proportional to 220,122.70, 330,184.05 and 141,390.70

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Solution

The fourth proportional to 220,122.70, 330,184.05 and 141,390.70 is: 212,086.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,122.70 : 330,184.05 = 141,390.70 : x
  2. Step 2: Convert to fraction form
    220,122.70/330,184.05 = 141,390.70/x
  3. Step 3: Cross multiply
    220,122.70x = 330,184.05 × 141,390.70
  4. Step 4: Simplify right side
    220,122.70x = 46,684,953,958.34
  5. Step 5: Solve for x
    x = 46,684,953,958.34/220,122.70
  6. Step 6: Final answer
    x = 212,086.05

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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.