Home / 278,140.32-415,174.50-238,949.28

Finding the Fourth Proportional to 278,140.32, 415,174.50 and 238,949.28

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Solution

The fourth proportional to 278,140.32, 415,174.50 and 238,949.28 is: 356,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,140.32 : 415,174.50 = 238,949.28 : x
  2. Step 2: Convert to fraction form
    278,140.32/415,174.50 = 238,949.28/x
  3. Step 3: Cross multiply
    278,140.32x = 415,174.50 × 238,949.28
  4. Step 4: Simplify right side
    278,140.32x = 99,205,647,849.36
  5. Step 5: Solve for x
    x = 99,205,647,849.36/278,140.32
  6. Step 6: Final answer
    x = 356,674.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.