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Finding the Fourth Proportional to 381,721.80, 572,582.70 and 349,062.60

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Solution

The fourth proportional to 381,721.80, 572,582.70 and 349,062.60 is: 523,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,721.80 : 572,582.70 = 349,062.60 : x
  2. Step 2: Convert to fraction form
    381,721.80/572,582.70 = 349,062.60/x
  3. Step 3: Cross multiply
    381,721.80x = 572,582.70 × 349,062.60
  4. Step 4: Simplify right side
    381,721.80x = 199,867,205,977.02
  5. Step 5: Solve for x
    x = 199,867,205,977.02/381,721.80
  6. Step 6: Final answer
    x = 523,593.90

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1.5x scale

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.