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Finding the Fourth Proportional to 356,509.26, 534,764.82 and 90,269.82

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Solution

The fourth proportional to 356,509.26, 534,764.82 and 90,269.82 is: 135,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,509.26 : 534,764.82 = 90,269.82 : x
  2. Step 2: Convert to fraction form
    356,509.26/534,764.82 = 90,269.82/x
  3. Step 3: Cross multiply
    356,509.26x = 534,764.82 × 90,269.82
  4. Step 4: Simplify right side
    356,509.26x = 48,273,124,043.73
  5. Step 5: Solve for x
    x = 48,273,124,043.73/356,509.26
  6. Step 6: Final answer
    x = 135,404.97

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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.