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Finding the Fourth Proportional to 386,919.60, 579,504.60 and 229,455.60

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Solution

The fourth proportional to 386,919.60, 579,504.60 and 229,455.60 is: 343,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,919.60 : 579,504.60 = 229,455.60 : x
  2. Step 2: Convert to fraction form
    386,919.60/579,504.60 = 229,455.60/x
  3. Step 3: Cross multiply
    386,919.60x = 579,504.60 × 229,455.60
  4. Step 4: Simplify right side
    386,919.60x = 132,970,575,695.76
  5. Step 5: Solve for x
    x = 132,970,575,695.76/386,919.60
  6. Step 6: Final answer
    x = 343,664.62

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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.