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Finding the Fourth Proportional to 209,630.99, 314,402.37 and 67,488.97

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Solution

The fourth proportional to 209,630.99, 314,402.37 and 67,488.97 is: 101,219.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,630.99 : 314,402.37 = 67,488.97 : x
  2. Step 2: Convert to fraction form
    209,630.99/314,402.37 = 67,488.97/x
  3. Step 3: Cross multiply
    209,630.99x = 314,402.37 × 67,488.97
  4. Step 4: Simplify right side
    209,630.99x = 21,218,692,116.86
  5. Step 5: Solve for x
    x = 21,218,692,116.86/209,630.99
  6. Step 6: Final answer
    x = 101,219.25

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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.