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Finding the Fourth Proportional to 276,726.80, 414,968.70 and 126,917.30

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Solution

The fourth proportional to 276,726.80, 414,968.70 and 126,917.30 is: 190,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,726.80 : 414,968.70 = 126,917.30 : x
  2. Step 2: Convert to fraction form
    276,726.80/414,968.70 = 126,917.30/x
  3. Step 3: Cross multiply
    276,726.80x = 414,968.70 × 126,917.30
  4. Step 4: Simplify right side
    276,726.80x = 52,666,706,988.51
  5. Step 5: Solve for x
    x = 52,666,706,988.51/276,726.80
  6. Step 6: Final answer
    x = 190,320.23

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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.