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Finding the Fourth Proportional to 286,601.90, 429,906.45 and 86,924.30

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Solution

The fourth proportional to 286,601.90, 429,906.45 and 86,924.30 is: 130,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,601.90 : 429,906.45 = 86,924.30 : x
  2. Step 2: Convert to fraction form
    286,601.90/429,906.45 = 86,924.30/x
  3. Step 3: Cross multiply
    286,601.90x = 429,906.45 × 86,924.30
  4. Step 4: Simplify right side
    286,601.90x = 37,369,317,231.74
  5. Step 5: Solve for x
    x = 37,369,317,231.74/286,601.90
  6. Step 6: Final answer
    x = 130,387.54

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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.