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Finding the Fourth Proportional to 365,990.34, 549,029.79 and 129,284.58

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Solution

The fourth proportional to 365,990.34, 549,029.79 and 129,284.58 is: 193,942.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,990.34 : 549,029.79 = 129,284.58 : x
  2. Step 2: Convert to fraction form
    365,990.34/549,029.79 = 129,284.58/x
  3. Step 3: Cross multiply
    365,990.34x = 549,029.79 × 129,284.58
  4. Step 4: Simplify right side
    365,990.34x = 70,981,085,807.64
  5. Step 5: Solve for x
    x = 70,981,085,807.64/365,990.34
  6. Step 6: Final answer
    x = 193,942.51

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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.