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Finding the Fourth Proportional to 276,352.70, 381,374.18 and 155,498.28

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Solution

The fourth proportional to 276,352.70, 381,374.18 and 155,498.28 is: 214,591.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,352.70 : 381,374.18 = 155,498.28 : x
  2. Step 2: Convert to fraction form
    276,352.70/381,374.18 = 155,498.28/x
  3. Step 3: Cross multiply
    276,352.70x = 381,374.18 × 155,498.28
  4. Step 4: Simplify right side
    276,352.70x = 59,303,028,248.92
  5. Step 5: Solve for x
    x = 59,303,028,248.92/276,352.70
  6. Step 6: Final answer
    x = 214,591.82

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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.