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Finding the Fourth Proportional to 537,622.80, 806,434.20 and 221,917.20

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Solution

The fourth proportional to 537,622.80, 806,434.20 and 221,917.20 is: 332,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,622.80 : 806,434.20 = 221,917.20 : x
  2. Step 2: Convert to fraction form
    537,622.80/806,434.20 = 221,917.20/x
  3. Step 3: Cross multiply
    537,622.80x = 806,434.20 × 221,917.20
  4. Step 4: Simplify right side
    537,622.80x = 178,961,619,648.24
  5. Step 5: Solve for x
    x = 178,961,619,648.24/537,622.80
  6. Step 6: Final answer
    x = 332,875.80

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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.