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Finding the Fourth Proportional to 252,846.72, 348,929.64 and 138,126.96

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Solution

The fourth proportional to 252,846.72, 348,929.64 and 138,126.96 is: 190,615.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,846.72 : 348,929.64 = 138,126.96 : x
  2. Step 2: Convert to fraction form
    252,846.72/348,929.64 = 138,126.96/x
  3. Step 3: Cross multiply
    252,846.72x = 348,929.64 × 138,126.96
  4. Step 4: Simplify right side
    252,846.72x = 48,196,590,427.09
  5. Step 5: Solve for x
    x = 48,196,590,427.09/252,846.72
  6. Step 6: Final answer
    x = 190,615.84

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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.