Home / 381,161.13-571,280.16-212,502.36

Finding the Fourth Proportional to 381,161.13, 571,280.16 and 212,502.36

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Solution

The fourth proportional to 381,161.13, 571,280.16 and 212,502.36 is: 318,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,161.13 : 571,280.16 = 212,502.36 : x
  2. Step 2: Convert to fraction form
    381,161.13/571,280.16 = 212,502.36/x
  3. Step 3: Cross multiply
    381,161.13x = 571,280.16 × 212,502.36
  4. Step 4: Simplify right side
    381,161.13x = 121,398,382,221.18
  5. Step 5: Solve for x
    x = 121,398,382,221.18/381,161.13
  6. Step 6: Final answer
    x = 318,496.23

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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.