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Finding the Fourth Proportional to 252,808.12, 348,877.01 and 139,630.87

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Solution

The fourth proportional to 252,808.12, 348,877.01 and 139,630.87 is: 192,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,808.12 : 348,877.01 = 139,630.87 : x
  2. Step 2: Convert to fraction form
    252,808.12/348,877.01 = 139,630.87/x
  3. Step 3: Cross multiply
    252,808.12x = 348,877.01 × 139,630.87
  4. Step 4: Simplify right side
    252,808.12x = 48,713,997,986.76
  5. Step 5: Solve for x
    x = 48,713,997,986.76/252,808.12
  6. Step 6: Final answer
    x = 192,691.59

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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.