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Finding the Fourth Proportional to 386,937.60, 580,843.80 and 298,582.80

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Solution

The fourth proportional to 386,937.60, 580,843.80 and 298,582.80 is: 448,211.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,937.60 : 580,843.80 = 298,582.80 : x
  2. Step 2: Convert to fraction form
    386,937.60/580,843.80 = 298,582.80/x
  3. Step 3: Cross multiply
    386,937.60x = 580,843.80 × 298,582.80
  4. Step 4: Simplify right side
    386,937.60x = 173,429,968,166.64
  5. Step 5: Solve for x
    x = 173,429,968,166.64/386,937.60
  6. Step 6: Final answer
    x = 448,211.72

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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.