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Finding the Fourth Proportional to 285,176.88, 427,678.92 and 118,926

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Solution

The fourth proportional to 285,176.88, 427,678.92 and 118,926 is: 178,352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,176.88 : 427,678.92 = 118,926 : x
  2. Step 2: Convert to fraction form
    285,176.88/427,678.92 = 118,926/x
  3. Step 3: Cross multiply
    285,176.88x = 427,678.92 × 118,926
  4. Step 4: Simplify right side
    285,176.88x = 50,862,143,239.92
  5. Step 5: Solve for x
    x = 50,862,143,239.92/285,176.88
  6. Step 6: Final answer
    x = 178,352.97

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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.