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Finding the Fourth Proportional to 252,613, 348,605.97 and 139,435.78

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Solution

The fourth proportional to 252,613, 348,605.97 and 139,435.78 is: 192,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,613 : 348,605.97 = 139,435.78 : x
  2. Step 2: Convert to fraction form
    252,613/348,605.97 = 139,435.78/x
  3. Step 3: Cross multiply
    252,613x = 348,605.97 × 139,435.78
  4. Step 4: Simplify right side
    252,613x = 48,608,145,339.61
  5. Step 5: Solve for x
    x = 48,608,145,339.61/252,613
  6. Step 6: Final answer
    x = 192,421.39

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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.