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Finding the Fourth Proportional to 381,365, 524,417.46 and 330,976.52

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Solution

The fourth proportional to 381,365, 524,417.46 and 330,976.52 is: 455,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,365 : 524,417.46 = 330,976.52 : x
  2. Step 2: Convert to fraction form
    381,365/524,417.46 = 330,976.52/x
  3. Step 3: Cross multiply
    381,365x = 524,417.46 × 330,976.52
  4. Step 4: Simplify right side
    381,365x = 173,569,865,938.04
  5. Step 5: Solve for x
    x = 173,569,865,938.04/381,365
  6. Step 6: Final answer
    x = 455,127.94

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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.