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Finding the Fourth Proportional to 209,212.03, 288,703.29 and 118,562.68

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Solution

The fourth proportional to 209,212.03, 288,703.29 and 118,562.68 is: 163,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,212.03 : 288,703.29 = 118,562.68 : x
  2. Step 2: Convert to fraction form
    209,212.03/288,703.29 = 118,562.68/x
  3. Step 3: Cross multiply
    209,212.03x = 288,703.29 × 118,562.68
  4. Step 4: Simplify right side
    209,212.03x = 34,229,435,787.22
  5. Step 5: Solve for x
    x = 34,229,435,787.22/209,212.03
  6. Step 6: Final answer
    x = 163,611.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.