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Finding the Fourth Proportional to 381,348.30, 572,022.45 and 374,349.90

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Solution

The fourth proportional to 381,348.30, 572,022.45 and 374,349.90 is: 561,524.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,348.30 : 572,022.45 = 374,349.90 : x
  2. Step 2: Convert to fraction form
    381,348.30/572,022.45 = 374,349.90/x
  3. Step 3: Cross multiply
    381,348.30x = 572,022.45 × 374,349.90
  4. Step 4: Simplify right side
    381,348.30x = 214,136,546,955.26
  5. Step 5: Solve for x
    x = 214,136,546,955.26/381,348.30
  6. Step 6: Final answer
    x = 561,524.85

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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.