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Finding the Fourth Proportional to 209,717.60, 314,620.08 and 69,487.20

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Solution

The fourth proportional to 209,717.60, 314,620.08 and 69,487.20 is: 104,245.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,717.60 : 314,620.08 = 69,487.20 : x
  2. Step 2: Convert to fraction form
    209,717.60/314,620.08 = 69,487.20/x
  3. Step 3: Cross multiply
    209,717.60x = 314,620.08 × 69,487.20
  4. Step 4: Simplify right side
    209,717.60x = 21,862,068,422.98
  5. Step 5: Solve for x
    x = 21,862,068,422.98/209,717.60
  6. Step 6: Final answer
    x = 104,245.27

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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.