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Finding the Fourth Proportional to 220,421.70, 304,184.97 and 119,821.86

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Solution

The fourth proportional to 220,421.70, 304,184.97 and 119,821.86 is: 165,355.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,421.70 : 304,184.97 = 119,821.86 : x
  2. Step 2: Convert to fraction form
    220,421.70/304,184.97 = 119,821.86/x
  3. Step 3: Cross multiply
    220,421.70x = 304,184.97 × 119,821.86
  4. Step 4: Simplify right side
    220,421.70x = 36,448,008,889.44
  5. Step 5: Solve for x
    x = 36,448,008,889.44/220,421.70
  6. Step 6: Final answer
    x = 165,355.81

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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.