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Finding the Fourth Proportional to 207,312.60, 310,819.26 and 80,845.68

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Solution

The fourth proportional to 207,312.60, 310,819.26 and 80,845.68 is: 121,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312.60 : 310,819.26 = 80,845.68 : x
  2. Step 2: Convert to fraction form
    207,312.60/310,819.26 = 80,845.68/x
  3. Step 3: Cross multiply
    207,312.60x = 310,819.26 × 80,845.68
  4. Step 4: Simplify right side
    207,312.60x = 25,128,394,431.80
  5. Step 5: Solve for x
    x = 25,128,394,431.80/207,312.60
  6. Step 6: Final answer
    x = 121,210.16

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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.