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Finding the Fourth Proportional to 220,469.86, 303,798.09 and 208,560.34

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Solution

The fourth proportional to 220,469.86, 303,798.09 and 208,560.34 is: 287,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,469.86 : 303,798.09 = 208,560.34 : x
  2. Step 2: Convert to fraction form
    220,469.86/303,798.09 = 208,560.34/x
  3. Step 3: Cross multiply
    220,469.86x = 303,798.09 × 208,560.34
  4. Step 4: Simplify right side
    220,469.86x = 63,360,232,941.75
  5. Step 5: Solve for x
    x = 63,360,232,941.75/220,469.86
  6. Step 6: Final answer
    x = 287,387.28

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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.