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Finding the Fourth Proportional to 386,948.60, 580,860.30 and 298,593.80

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Solution

The fourth proportional to 386,948.60, 580,860.30 and 298,593.80 is: 448,228.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,948.60 : 580,860.30 = 298,593.80 : x
  2. Step 2: Convert to fraction form
    386,948.60/580,860.30 = 298,593.80/x
  3. Step 3: Cross multiply
    386,948.60x = 580,860.30 × 298,593.80
  4. Step 4: Simplify right side
    386,948.60x = 173,441,284,246.14
  5. Step 5: Solve for x
    x = 173,441,284,246.14/386,948.60
  6. Step 6: Final answer
    x = 448,228.23

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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.