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Finding the Fourth Proportional to 286,397.87, 429,611.15 and 73,167.42

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Solution

The fourth proportional to 286,397.87, 429,611.15 and 73,167.42 is: 109,754.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,397.87 : 429,611.15 = 73,167.42 : x
  2. Step 2: Convert to fraction form
    286,397.87/429,611.15 = 73,167.42/x
  3. Step 3: Cross multiply
    286,397.87x = 429,611.15 × 73,167.42
  4. Step 4: Simplify right side
    286,397.87x = 31,433,539,448.73
  5. Step 5: Solve for x
    x = 31,433,539,448.73/286,397.87
  6. Step 6: Final answer
    x = 109,754.79

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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.