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Finding the Fourth Proportional to 286,418.52, 429,689.73 and 108,928.89

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Solution

The fourth proportional to 286,418.52, 429,689.73 and 108,928.89 is: 163,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,418.52 : 429,689.73 = 108,928.89 : x
  2. Step 2: Convert to fraction form
    286,418.52/429,689.73 = 108,928.89/x
  3. Step 3: Cross multiply
    286,418.52x = 429,689.73 × 108,928.89
  4. Step 4: Simplify right side
    286,418.52x = 46,805,625,333.30
  5. Step 5: Solve for x
    x = 46,805,625,333.30/286,418.52
  6. Step 6: Final answer
    x = 163,416.90

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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.