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Finding the Fourth Proportional to 221,805.80, 332,751.90 and 64,039.40

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Solution

The fourth proportional to 221,805.80, 332,751.90 and 64,039.40 is: 96,071.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,805.80 : 332,751.90 = 64,039.40 : x
  2. Step 2: Convert to fraction form
    221,805.80/332,751.90 = 64,039.40/x
  3. Step 3: Cross multiply
    221,805.80x = 332,751.90 × 64,039.40
  4. Step 4: Simplify right side
    221,805.80x = 21,309,232,024.86
  5. Step 5: Solve for x
    x = 21,309,232,024.86/221,805.80
  6. Step 6: Final answer
    x = 96,071.57

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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.