Home / 381,287.12-571,393.07-210,585.79

Finding the Fourth Proportional to 381,287.12, 571,393.07 and 210,585.79

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Solution

The fourth proportional to 381,287.12, 571,393.07 and 210,585.79 is: 315,581.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,287.12 : 571,393.07 = 210,585.79 : x
  2. Step 2: Convert to fraction form
    381,287.12/571,393.07 = 210,585.79/x
  3. Step 3: Cross multiply
    381,287.12x = 571,393.07 × 210,585.79
  4. Step 4: Simplify right side
    381,287.12x = 120,327,261,497.48
  5. Step 5: Solve for x
    x = 120,327,261,497.48/381,287.12
  6. Step 6: Final answer
    x = 315,581.77

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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.