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Finding the Fourth Proportional to 293,212.40, 439,818.60 and 261,719.60

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Solution

The fourth proportional to 293,212.40, 439,818.60 and 261,719.60 is: 392,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,212.40 : 439,818.60 = 261,719.60 : x
  2. Step 2: Convert to fraction form
    293,212.40/439,818.60 = 261,719.60/x
  3. Step 3: Cross multiply
    293,212.40x = 439,818.60 × 261,719.60
  4. Step 4: Simplify right side
    293,212.40x = 115,109,148,064.56
  5. Step 5: Solve for x
    x = 115,109,148,064.56/293,212.40
  6. Step 6: Final answer
    x = 392,579.40

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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.