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Finding the Fourth Proportional to 253,149.52, 349,322.88 and 139,969.84

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Solution

The fourth proportional to 253,149.52, 349,322.88 and 139,969.84 is: 193,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,149.52 : 349,322.88 = 139,969.84 : x
  2. Step 2: Convert to fraction form
    253,149.52/349,322.88 = 139,969.84/x
  3. Step 3: Cross multiply
    253,149.52x = 349,322.88 × 139,969.84
  4. Step 4: Simplify right side
    253,149.52x = 48,894,667,621.94
  5. Step 5: Solve for x
    x = 48,894,667,621.94/253,149.52
  6. Step 6: Final answer
    x = 193,145.41

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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.