Home / 381,162.13-571,281.66-212,503.36

Finding the Fourth Proportional to 381,162.13, 571,281.66 and 212,503.36

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Solution

The fourth proportional to 381,162.13, 571,281.66 and 212,503.36 is: 318,497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,162.13 : 571,281.66 = 212,503.36 : x
  2. Step 2: Convert to fraction form
    381,162.13/571,281.66 = 212,503.36/x
  3. Step 3: Cross multiply
    381,162.13x = 571,281.66 × 212,503.36
  4. Step 4: Simplify right side
    381,162.13x = 121,399,272,256.38
  5. Step 5: Solve for x
    x = 121,399,272,256.38/381,162.13
  6. Step 6: Final answer
    x = 318,497.73

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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.