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Finding the Fourth Proportional to 220,698.91, 304,560.02 and 123,905.12

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Solution

The fourth proportional to 220,698.91, 304,560.02 and 123,905.12 is: 170,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,698.91 : 304,560.02 = 123,905.12 : x
  2. Step 2: Convert to fraction form
    220,698.91/304,560.02 = 123,905.12/x
  3. Step 3: Cross multiply
    220,698.91x = 304,560.02 × 123,905.12
  4. Step 4: Simplify right side
    220,698.91x = 37,736,545,205.78
  5. Step 5: Solve for x
    x = 37,736,545,205.78/220,698.91
  6. Step 6: Final answer
    x = 170,986.55

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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.