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Finding the Fourth Proportional to 286,707.72, 429,886.62 and 118,175.88

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Solution

The fourth proportional to 286,707.72, 429,886.62 and 118,175.88 is: 177,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,707.72 : 429,886.62 = 118,175.88 : x
  2. Step 2: Convert to fraction form
    286,707.72/429,886.62 = 118,175.88/x
  3. Step 3: Cross multiply
    286,707.72x = 429,886.62 × 118,175.88
  4. Step 4: Simplify right side
    286,707.72x = 50,802,229,618.73
  5. Step 5: Solve for x
    x = 50,802,229,618.73/286,707.72
  6. Step 6: Final answer
    x = 177,191.70

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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.