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Finding the Fourth Proportional to 286,606.11, 429,908.66 and 76,244.06

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Solution

The fourth proportional to 286,606.11, 429,908.66 and 76,244.06 is: 114,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,606.11 : 429,908.66 = 76,244.06 : x
  2. Step 2: Convert to fraction form
    286,606.11/429,908.66 = 76,244.06/x
  3. Step 3: Cross multiply
    286,606.11x = 429,908.66 × 76,244.06
  4. Step 4: Simplify right side
    286,606.11x = 32,777,979,136.80
  5. Step 5: Solve for x
    x = 32,777,979,136.80/286,606.11
  6. Step 6: Final answer
    x = 114,365.95

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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.