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Finding the Fourth Proportional to 268,889.83, 403,240.48 and 79,299.81

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Solution

The fourth proportional to 268,889.83, 403,240.48 and 79,299.81 is: 118,921.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,889.83 : 403,240.48 = 79,299.81 : x
  2. Step 2: Convert to fraction form
    268,889.83/403,240.48 = 79,299.81/x
  3. Step 3: Cross multiply
    268,889.83x = 403,240.48 × 79,299.81
  4. Step 4: Simplify right side
    268,889.83x = 31,976,893,250.06
  5. Step 5: Solve for x
    x = 31,976,893,250.06/268,889.83
  6. Step 6: Final answer
    x = 118,921.92

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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.