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Finding the Fourth Proportional to 253,056.86, 349,204.83 and 139,872.86

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Solution

The fourth proportional to 253,056.86, 349,204.83 and 139,872.86 is: 193,017.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,056.86 : 349,204.83 = 139,872.86 : x
  2. Step 2: Convert to fraction form
    253,056.86/349,204.83 = 139,872.86/x
  3. Step 3: Cross multiply
    253,056.86x = 349,204.83 × 139,872.86
  4. Step 4: Simplify right side
    253,056.86x = 48,844,278,297.91
  5. Step 5: Solve for x
    x = 48,844,278,297.91/253,056.86
  6. Step 6: Final answer
    x = 193,017.01

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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.