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Finding the Fourth Proportional to 550,375.18, 758,814.66 and 356,440.22

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Solution

The fourth proportional to 550,375.18, 758,814.66 and 356,440.22 is: 491,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,375.18 : 758,814.66 = 356,440.22 : x
  2. Step 2: Convert to fraction form
    550,375.18/758,814.66 = 356,440.22/x
  3. Step 3: Cross multiply
    550,375.18x = 758,814.66 × 356,440.22
  4. Step 4: Simplify right side
    550,375.18x = 270,472,064,349.63
  5. Step 5: Solve for x
    x = 270,472,064,349.63/550,375.18
  6. Step 6: Final answer
    x = 491,432.16

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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.