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Finding the Fourth Proportional to 220,757.12, 304,670.76 and 123,976.88

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Solution

The fourth proportional to 220,757.12, 304,670.76 and 123,976.88 is: 171,102.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,757.12 : 304,670.76 = 123,976.88 : x
  2. Step 2: Convert to fraction form
    220,757.12/304,670.76 = 123,976.88/x
  3. Step 3: Cross multiply
    220,757.12x = 304,670.76 × 123,976.88
  4. Step 4: Simplify right side
    220,757.12x = 37,772,130,252.03
  5. Step 5: Solve for x
    x = 37,772,130,252.03/220,757.12
  6. Step 6: Final answer
    x = 171,102.66

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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.