Home / 378,045.28-521,874.96-269,219.68

Finding the Fourth Proportional to 378,045.28, 521,874.96 and 269,219.68

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Solution

The fourth proportional to 378,045.28, 521,874.96 and 269,219.68 is: 371,645.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,045.28 : 521,874.96 = 269,219.68 : x
  2. Step 2: Convert to fraction form
    378,045.28/521,874.96 = 269,219.68/x
  3. Step 3: Cross multiply
    378,045.28x = 521,874.96 × 269,219.68
  4. Step 4: Simplify right side
    378,045.28x = 140,499,009,731.21
  5. Step 5: Solve for x
    x = 140,499,009,731.21/378,045.28
  6. Step 6: Final answer
    x = 371,645.98

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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.