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Finding the Fourth Proportional to 209,909.20, 314,806.22 and 125,603.04

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Solution

The fourth proportional to 209,909.20, 314,806.22 and 125,603.04 is: 188,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,909.20 : 314,806.22 = 125,603.04 : x
  2. Step 2: Convert to fraction form
    209,909.20/314,806.22 = 125,603.04/x
  3. Step 3: Cross multiply
    209,909.20x = 314,806.22 × 125,603.04
  4. Step 4: Simplify right side
    209,909.20x = 39,540,618,242.91
  5. Step 5: Solve for x
    x = 39,540,618,242.91/209,909.20
  6. Step 6: Final answer
    x = 188,370.11

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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.