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Finding the Fourth Proportional to 276,340.16, 381,333.68 and 155,486.64

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Solution

The fourth proportional to 276,340.16, 381,333.68 and 155,486.64 is: 214,562.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,340.16 : 381,333.68 = 155,486.64 : x
  2. Step 2: Convert to fraction form
    276,340.16/381,333.68 = 155,486.64/x
  3. Step 3: Cross multiply
    276,340.16x = 381,333.68 × 155,486.64
  4. Step 4: Simplify right side
    276,340.16x = 59,292,292,622.04
  5. Step 5: Solve for x
    x = 59,292,292,622.04/276,340.16
  6. Step 6: Final answer
    x = 214,562.71

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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.