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Finding the Fourth Proportional to 276,604, 381,690.84 and 155,706.64

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Solution

The fourth proportional to 276,604, 381,690.84 and 155,706.64 is: 214,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,604 : 381,690.84 = 155,706.64 : x
  2. Step 2: Convert to fraction form
    276,604/381,690.84 = 155,706.64/x
  3. Step 3: Cross multiply
    276,604x = 381,690.84 × 155,706.64
  4. Step 4: Simplify right side
    276,604x = 59,431,798,215.18
  5. Step 5: Solve for x
    x = 59,431,798,215.18/276,604
  6. Step 6: Final answer
    x = 214,862.40

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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.