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Finding the Fourth Proportional to 252,712.58, 348,751.51 and 137,997.21

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Solution

The fourth proportional to 252,712.58, 348,751.51 and 137,997.21 is: 190,440.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,712.58 : 348,751.51 = 137,997.21 : x
  2. Step 2: Convert to fraction form
    252,712.58/348,751.51 = 137,997.21/x
  3. Step 3: Cross multiply
    252,712.58x = 348,751.51 × 137,997.21
  4. Step 4: Simplify right side
    252,712.58x = 48,126,736,663.07
  5. Step 5: Solve for x
    x = 48,126,736,663.07/252,712.58
  6. Step 6: Final answer
    x = 190,440.61

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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.