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Finding the Fourth Proportional to 276,062.67, 380,970.40 and 155,197.21

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Solution

The fourth proportional to 276,062.67, 380,970.40 and 155,197.21 is: 214,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,062.67 : 380,970.40 = 155,197.21 : x
  2. Step 2: Convert to fraction form
    276,062.67/380,970.40 = 155,197.21/x
  3. Step 3: Cross multiply
    276,062.67x = 380,970.40 × 155,197.21
  4. Step 4: Simplify right side
    276,062.67x = 59,125,541,267.73
  5. Step 5: Solve for x
    x = 59,125,541,267.73/276,062.67
  6. Step 6: Final answer
    x = 214,174.34

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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.