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Finding the Fourth Proportional to 252,701.46, 348,735.20 and 137,987.39

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Solution

The fourth proportional to 252,701.46, 348,735.20 and 137,987.39 is: 190,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,701.46 : 348,735.20 = 137,987.39 : x
  2. Step 2: Convert to fraction form
    252,701.46/348,735.20 = 137,987.39/x
  3. Step 3: Cross multiply
    252,701.46x = 348,735.20 × 137,987.39
  4. Step 4: Simplify right side
    252,701.46x = 48,121,059,638.30
  5. Step 5: Solve for x
    x = 48,121,059,638.30/252,701.46
  6. Step 6: Final answer
    x = 190,426.52

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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.