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Finding the Fourth Proportional to 252,909.64, 349,029.30 and 139,729.96

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Solution

The fourth proportional to 252,909.64, 349,029.30 and 139,729.96 is: 192,835.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,909.64 : 349,029.30 = 139,729.96 : x
  2. Step 2: Convert to fraction form
    252,909.64/349,029.30 = 139,729.96/x
  3. Step 3: Cross multiply
    252,909.64x = 349,029.30 × 139,729.96
  4. Step 4: Simplify right side
    252,909.64x = 48,769,850,127.83
  5. Step 5: Solve for x
    x = 48,769,850,127.83/252,909.64
  6. Step 6: Final answer
    x = 192,835.08

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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.