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Finding the Fourth Proportional to 203,063.80, 304,595.70 and 55,319.80

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Solution

The fourth proportional to 203,063.80, 304,595.70 and 55,319.80 is: 82,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,063.80 : 304,595.70 = 55,319.80 : x
  2. Step 2: Convert to fraction form
    203,063.80/304,595.70 = 55,319.80/x
  3. Step 3: Cross multiply
    203,063.80x = 304,595.70 × 55,319.80
  4. Step 4: Simplify right side
    203,063.80x = 16,850,173,204.86
  5. Step 5: Solve for x
    x = 16,850,173,204.86/203,063.80
  6. Step 6: Final answer
    x = 82,979.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.