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Finding the Fourth Proportional to 303,522.08, 455,282.88 and 78,863.68

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Solution

The fourth proportional to 303,522.08, 455,282.88 and 78,863.68 is: 118,295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,522.08 : 455,282.88 = 78,863.68 : x
  2. Step 2: Convert to fraction form
    303,522.08/455,282.88 = 78,863.68/x
  3. Step 3: Cross multiply
    303,522.08x = 455,282.88 × 78,863.68
  4. Step 4: Simplify right side
    303,522.08x = 35,905,283,357.80
  5. Step 5: Solve for x
    x = 35,905,283,357.80/303,522.08
  6. Step 6: Final answer
    x = 118,295.46

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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.