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Finding the Fourth Proportional to 276,616.17, 381,726.67 and 155,769.39

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Solution

The fourth proportional to 276,616.17, 381,726.67 and 155,769.39 is: 214,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,616.17 : 381,726.67 = 155,769.39 : x
  2. Step 2: Convert to fraction form
    276,616.17/381,726.67 = 155,769.39/x
  3. Step 3: Cross multiply
    276,616.17x = 381,726.67 × 155,769.39
  4. Step 4: Simplify right side
    276,616.17x = 59,461,330,532.63
  5. Step 5: Solve for x
    x = 59,461,330,532.63/276,616.17
  6. Step 6: Final answer
    x = 214,959.71

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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.