Home / 381,891.36-572,919.64-145,238.52

Finding the Fourth Proportional to 381,891.36, 572,919.64 and 145,238.52

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Solution

The fourth proportional to 381,891.36, 572,919.64 and 145,238.52 is: 217,889.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,891.36 : 572,919.64 = 145,238.52 : x
  2. Step 2: Convert to fraction form
    381,891.36/572,919.64 = 145,238.52/x
  3. Step 3: Cross multiply
    381,891.36x = 572,919.64 × 145,238.52
  4. Step 4: Simplify right side
    381,891.36x = 83,210,000,592.53
  5. Step 5: Solve for x
    x = 83,210,000,592.53/381,891.36
  6. Step 6: Final answer
    x = 217,889.19

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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.