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Finding the Fourth Proportional to 376,878, 565,576.20 and 155,262

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Solution

The fourth proportional to 376,878, 565,576.20 and 155,262 is: 232,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,878 : 565,576.20 = 155,262 : x
  2. Step 2: Convert to fraction form
    376,878/565,576.20 = 155,262/x
  3. Step 3: Cross multiply
    376,878x = 565,576.20 × 155,262
  4. Step 4: Simplify right side
    376,878x = 87,812,491,964.40
  5. Step 5: Solve for x
    x = 87,812,491,964.40/376,878
  6. Step 6: Final answer
    x = 232,999.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.