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Finding the Fourth Proportional to 252,850.61, 348,938.89 and 138,133.86

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Solution

The fourth proportional to 252,850.61, 348,938.89 and 138,133.86 is: 190,627.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,850.61 : 348,938.89 = 138,133.86 : x
  2. Step 2: Convert to fraction form
    252,850.61/348,938.89 = 138,133.86/x
  3. Step 3: Cross multiply
    252,850.61x = 348,938.89 × 138,133.86
  4. Step 4: Simplify right side
    252,850.61x = 48,200,274,125.96
  5. Step 5: Solve for x
    x = 48,200,274,125.96/252,850.61
  6. Step 6: Final answer
    x = 190,627.48

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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.