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Finding the Fourth Proportional to 286,626.39, 429,939.60 and 89,634.39

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Solution

The fourth proportional to 286,626.39, 429,939.60 and 89,634.39 is: 134,451.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,626.39 : 429,939.60 = 89,634.39 : x
  2. Step 2: Convert to fraction form
    286,626.39/429,939.60 = 89,634.39/x
  3. Step 3: Cross multiply
    286,626.39x = 429,939.60 × 89,634.39
  4. Step 4: Simplify right side
    286,626.39x = 38,537,373,782.84
  5. Step 5: Solve for x
    x = 38,537,373,782.84/286,626.39
  6. Step 6: Final answer
    x = 134,451.59

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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.