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Finding the Fourth Proportional to 370,800, 556,217.28 and 108,144

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Solution

The fourth proportional to 370,800, 556,217.28 and 108,144 is: 162,221.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,800 : 556,217.28 = 108,144 : x
  2. Step 2: Convert to fraction form
    370,800/556,217.28 = 108,144/x
  3. Step 3: Cross multiply
    370,800x = 556,217.28 × 108,144
  4. Step 4: Simplify right side
    370,800x = 60,151,561,528.32
  5. Step 5: Solve for x
    x = 60,151,561,528.32/370,800
  6. Step 6: Final answer
    x = 162,221.04

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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.