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Finding the Fourth Proportional to 338,755.82, 508,133.74 and 89,439.98

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Solution

The fourth proportional to 338,755.82, 508,133.74 and 89,439.98 is: 134,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,755.82 : 508,133.74 = 89,439.98 : x
  2. Step 2: Convert to fraction form
    338,755.82/508,133.74 = 89,439.98/x
  3. Step 3: Cross multiply
    338,755.82x = 508,133.74 × 89,439.98
  4. Step 4: Simplify right side
    338,755.82x = 45,447,471,542.93
  5. Step 5: Solve for x
    x = 45,447,471,542.93/338,755.82
  6. Step 6: Final answer
    x = 134,159.97

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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.