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Finding the Fourth Proportional to 276,047.84, 380,959.54 and 155,227.16

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Solution

The fourth proportional to 276,047.84, 380,959.54 and 155,227.16 is: 214,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,047.84 : 380,959.54 = 155,227.16 : x
  2. Step 2: Convert to fraction form
    276,047.84/380,959.54 = 155,227.16/x
  3. Step 3: Cross multiply
    276,047.84x = 380,959.54 × 155,227.16
  4. Step 4: Simplify right side
    276,047.84x = 59,135,267,469.11
  5. Step 5: Solve for x
    x = 59,135,267,469.11/276,047.84
  6. Step 6: Final answer
    x = 214,221.08

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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.