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Finding the Fourth Proportional to 252,197.55, 348,032.21 and 139,020.39

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Solution

The fourth proportional to 252,197.55, 348,032.21 and 139,020.39 is: 191,847.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,197.55 : 348,032.21 = 139,020.39 : x
  2. Step 2: Convert to fraction form
    252,197.55/348,032.21 = 139,020.39/x
  3. Step 3: Cross multiply
    252,197.55x = 348,032.21 × 139,020.39
  4. Step 4: Simplify right side
    252,197.55x = 48,383,572,871.66
  5. Step 5: Solve for x
    x = 48,383,572,871.66/252,197.55
  6. Step 6: Final answer
    x = 191,847.91

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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.