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Finding the Fourth Proportional to 209,881.60, 314,793.60 and 69,625.60

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Solution

The fourth proportional to 209,881.60, 314,793.60 and 69,625.60 is: 104,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,881.60 : 314,793.60 = 69,625.60 : x
  2. Step 2: Convert to fraction form
    209,881.60/314,793.60 = 69,625.60/x
  3. Step 3: Cross multiply
    209,881.60x = 314,793.60 × 69,625.60
  4. Step 4: Simplify right side
    209,881.60x = 21,917,693,276.16
  5. Step 5: Solve for x
    x = 21,917,693,276.16/209,881.60
  6. Step 6: Final answer
    x = 104,428.85

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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.