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Finding the Fourth Proportional to 252,671.91, 348,647.59 and 145,221.86

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Solution

The fourth proportional to 252,671.91, 348,647.59 and 145,221.86 is: 200,383.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,671.91 : 348,647.59 = 145,221.86 : x
  2. Step 2: Convert to fraction form
    252,671.91/348,647.59 = 145,221.86/x
  3. Step 3: Cross multiply
    252,671.91x = 348,647.59 × 145,221.86
  4. Step 4: Simplify right side
    252,671.91x = 50,631,252,557.46
  5. Step 5: Solve for x
    x = 50,631,252,557.46/252,671.91
  6. Step 6: Final answer
    x = 200,383.39

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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.