Home / 378,065.24-521,441.90-257,002.48

Finding the Fourth Proportional to 378,065.24, 521,441.90 and 257,002.48

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Solution

The fourth proportional to 378,065.24, 521,441.90 and 257,002.48 is: 354,467.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,065.24 : 521,441.90 = 257,002.48 : x
  2. Step 2: Convert to fraction form
    378,065.24/521,441.90 = 257,002.48/x
  3. Step 3: Cross multiply
    378,065.24x = 521,441.90 × 257,002.48
  4. Step 4: Simplify right side
    378,065.24x = 134,011,861,475.91
  5. Step 5: Solve for x
    x = 134,011,861,475.91/378,065.24
  6. Step 6: Final answer
    x = 354,467.56

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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.