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Finding the Fourth Proportional to 203,319.40, 304,979.10 and 55,575.40

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Solution

The fourth proportional to 203,319.40, 304,979.10 and 55,575.40 is: 83,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,319.40 : 304,979.10 = 55,575.40 : x
  2. Step 2: Convert to fraction form
    203,319.40/304,979.10 = 55,575.40/x
  3. Step 3: Cross multiply
    203,319.40x = 304,979.10 × 55,575.40
  4. Step 4: Simplify right side
    203,319.40x = 16,949,335,474.14
  5. Step 5: Solve for x
    x = 16,949,335,474.14/203,319.40
  6. Step 6: Final answer
    x = 83,363.10

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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.