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Finding the Fourth Proportional to 203,211.72, 304,768.56 and 84,818.88

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Solution

The fourth proportional to 203,211.72, 304,768.56 and 84,818.88 is: 127,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,211.72 : 304,768.56 = 84,818.88 : x
  2. Step 2: Convert to fraction form
    203,211.72/304,768.56 = 84,818.88/x
  3. Step 3: Cross multiply
    203,211.72x = 304,768.56 × 84,818.88
  4. Step 4: Simplify right side
    203,211.72x = 25,850,127,918.41
  5. Step 5: Solve for x
    x = 25,850,127,918.41/203,211.72
  6. Step 6: Final answer
    x = 127,207.86

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1.5x scale

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.