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Finding the Fourth Proportional to 252,905.66, 349,005.66 and 138,181.79

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Solution

The fourth proportional to 252,905.66, 349,005.66 and 138,181.79 is: 190,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,905.66 : 349,005.66 = 138,181.79 : x
  2. Step 2: Convert to fraction form
    252,905.66/349,005.66 = 138,181.79/x
  3. Step 3: Cross multiply
    252,905.66x = 349,005.66 × 138,181.79
  4. Step 4: Simplify right side
    252,905.66x = 48,226,225,073.90
  5. Step 5: Solve for x
    x = 48,226,225,073.90/252,905.66
  6. Step 6: Final answer
    x = 190,688.60

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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.