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Finding the Fourth Proportional to 220,470.36, 303,798.78 and 208,560.84

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Solution

The fourth proportional to 220,470.36, 303,798.78 and 208,560.84 is: 287,387.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,470.36 : 303,798.78 = 208,560.84 : x
  2. Step 2: Convert to fraction form
    220,470.36/303,798.78 = 208,560.84/x
  3. Step 3: Cross multiply
    220,470.36x = 303,798.78 × 208,560.84
  4. Step 4: Simplify right side
    220,470.36x = 63,360,528,747.78
  5. Step 5: Solve for x
    x = 63,360,528,747.78/220,470.36
  6. Step 6: Final answer
    x = 287,387.97

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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.