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Finding the Fourth Proportional to 618,271.80, 927,236.40 and 218,860.02

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Solution

The fourth proportional to 618,271.80, 927,236.40 and 218,860.02 is: 328,229.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,271.80 : 927,236.40 = 218,860.02 : x
  2. Step 2: Convert to fraction form
    618,271.80/927,236.40 = 218,860.02/x
  3. Step 3: Cross multiply
    618,271.80x = 927,236.40 × 218,860.02
  4. Step 4: Simplify right side
    618,271.80x = 202,934,977,048.73
  5. Step 5: Solve for x
    x = 202,934,977,048.73/618,271.80
  6. Step 6: Final answer
    x = 328,229.39

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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.