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Finding the Fourth Proportional to 203,031.06, 304,608.88 and 90,805.68

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Solution

The fourth proportional to 203,031.06, 304,608.88 and 90,805.68 is: 136,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,031.06 : 304,608.88 = 90,805.68 : x
  2. Step 2: Convert to fraction form
    203,031.06/304,608.88 = 90,805.68/x
  3. Step 3: Cross multiply
    203,031.06x = 304,608.88 × 90,805.68
  4. Step 4: Simplify right side
    203,031.06x = 27,660,216,482.44
  5. Step 5: Solve for x
    x = 27,660,216,482.44/203,031.06
  6. Step 6: Final answer
    x = 136,236.38

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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.