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Finding the Fourth Proportional to 381,360, 524,410.56 and 330,971.52

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Solution

The fourth proportional to 381,360, 524,410.56 and 330,971.52 is: 455,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,360 : 524,410.56 = 330,971.52 : x
  2. Step 2: Convert to fraction form
    381,360/524,410.56 = 330,971.52/x
  3. Step 3: Cross multiply
    381,360x = 524,410.56 × 330,971.52
  4. Step 4: Simplify right side
    381,360x = 173,564,960,147.25
  5. Step 5: Solve for x
    x = 173,564,960,147.25/381,360
  6. Step 6: Final answer
    x = 455,121.04

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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.