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Finding the Fourth Proportional to 252,991.54, 349,114.62 and 139,807

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Solution

The fourth proportional to 252,991.54, 349,114.62 and 139,807 is: 192,926.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,991.54 : 349,114.62 = 139,807 : x
  2. Step 2: Convert to fraction form
    252,991.54/349,114.62 = 139,807/x
  3. Step 3: Cross multiply
    252,991.54x = 349,114.62 × 139,807
  4. Step 4: Simplify right side
    252,991.54x = 48,808,667,678.34
  5. Step 5: Solve for x
    x = 48,808,667,678.34/252,991.54
  6. Step 6: Final answer
    x = 192,926.09

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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.