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Finding the Fourth Proportional to 618,386, 927,579 and 151,442

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Solution

The fourth proportional to 618,386, 927,579 and 151,442 is: 227,163

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,386 : 927,579 = 151,442 : x
  2. Step 2: Convert to fraction form
    618,386/927,579 = 151,442/x
  3. Step 3: Cross multiply
    618,386x = 927,579 × 151,442
  4. Step 4: Simplify right side
    618,386x = 140,474,418,918
  5. Step 5: Solve for x
    x = 140,474,418,918/618,386
  6. Step 6: Final answer
    x = 227,163

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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.