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Finding the Fourth Proportional to 276,921.80, 382,153.56 and 156,064.94

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Solution

The fourth proportional to 276,921.80, 382,153.56 and 156,064.94 is: 215,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,921.80 : 382,153.56 = 156,064.94 : x
  2. Step 2: Convert to fraction form
    276,921.80/382,153.56 = 156,064.94/x
  3. Step 3: Cross multiply
    276,921.80x = 382,153.56 × 156,064.94
  4. Step 4: Simplify right side
    276,921.80x = 59,640,772,412.19
  5. Step 5: Solve for x
    x = 59,640,772,412.19/276,921.80
  6. Step 6: Final answer
    x = 215,370.45

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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.