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Finding the Fourth Proportional to 252,411.78, 348,301.34 and 139,234.52

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Solution

The fourth proportional to 252,411.78, 348,301.34 and 139,234.52 is: 192,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,411.78 : 348,301.34 = 139,234.52 : x
  2. Step 2: Convert to fraction form
    252,411.78/348,301.34 = 139,234.52/x
  3. Step 3: Cross multiply
    252,411.78x = 348,301.34 × 139,234.52
  4. Step 4: Simplify right side
    252,411.78x = 48,495,569,890.26
  5. Step 5: Solve for x
    x = 48,495,569,890.26/252,411.78
  6. Step 6: Final answer
    x = 192,128.79

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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.