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Finding the Fourth Proportional to 381,811.20, 526,867.20 and 230,899.20

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Solution

The fourth proportional to 381,811.20, 526,867.20 and 230,899.20 is: 318,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,811.20 : 526,867.20 = 230,899.20 : x
  2. Step 2: Convert to fraction form
    381,811.20/526,867.20 = 230,899.20/x
  3. Step 3: Cross multiply
    381,811.20x = 526,867.20 × 230,899.20
  4. Step 4: Simplify right side
    381,811.20x = 121,653,214,986.24
  5. Step 5: Solve for x
    x = 121,653,214,986.24/381,811.20
  6. Step 6: Final answer
    x = 318,621.39

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1.5x scale

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.