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Finding the Fourth Proportional to 276,241.52, 381,197.16 and 153,730.64

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Solution

The fourth proportional to 276,241.52, 381,197.16 and 153,730.64 is: 212,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,241.52 : 381,197.16 = 153,730.64 : x
  2. Step 2: Convert to fraction form
    276,241.52/381,197.16 = 153,730.64/x
  3. Step 3: Cross multiply
    276,241.52x = 381,197.16 × 153,730.64
  4. Step 4: Simplify right side
    276,241.52x = 58,601,683,372.98
  5. Step 5: Solve for x
    x = 58,601,683,372.98/276,241.52
  6. Step 6: Final answer
    x = 212,139.30

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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.