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Finding the Fourth Proportional to 381,728.30, 572,592.45 and 349,069.10

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Solution

The fourth proportional to 381,728.30, 572,592.45 and 349,069.10 is: 523,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,728.30 : 572,592.45 = 349,069.10 : x
  2. Step 2: Convert to fraction form
    381,728.30/572,592.45 = 349,069.10/x
  3. Step 3: Cross multiply
    381,728.30x = 572,592.45 × 349,069.10
  4. Step 4: Simplify right side
    381,728.30x = 199,874,331,188.30
  5. Step 5: Solve for x
    x = 199,874,331,188.30/381,728.30
  6. Step 6: Final answer
    x = 523,603.65

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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.