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Finding the Fourth Proportional to 221,678.70, 332,518.05 and 133,032.30

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Solution

The fourth proportional to 221,678.70, 332,518.05 and 133,032.30 is: 199,548.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,678.70 : 332,518.05 = 133,032.30 : x
  2. Step 2: Convert to fraction form
    221,678.70/332,518.05 = 133,032.30/x
  3. Step 3: Cross multiply
    221,678.70x = 332,518.05 × 133,032.30
  4. Step 4: Simplify right side
    221,678.70x = 44,235,640,983.02
  5. Step 5: Solve for x
    x = 44,235,640,983.02/221,678.70
  6. Step 6: Final answer
    x = 199,548.45

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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.