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Finding the Fourth Proportional to 203,326.50, 304,866.68 and 90,985.76

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Solution

The fourth proportional to 203,326.50, 304,866.68 and 90,985.76 is: 136,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,326.50 : 304,866.68 = 90,985.76 : x
  2. Step 2: Convert to fraction form
    203,326.50/304,866.68 = 90,985.76/x
  3. Step 3: Cross multiply
    203,326.50x = 304,866.68 × 90,985.76
  4. Step 4: Simplify right side
    203,326.50x = 27,738,524,599.21
  5. Step 5: Solve for x
    x = 27,738,524,599.21/203,326.50
  6. Step 6: Final answer
    x = 136,423.56

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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.