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Finding the Fourth Proportional to 209,604.94, 289,446.98 and 133,148.78

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Solution

The fourth proportional to 209,604.94, 289,446.98 and 133,148.78 is: 183,867.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,604.94 : 289,446.98 = 133,148.78 : x
  2. Step 2: Convert to fraction form
    209,604.94/289,446.98 = 133,148.78/x
  3. Step 3: Cross multiply
    209,604.94x = 289,446.98 × 133,148.78
  4. Step 4: Simplify right side
    209,604.94x = 38,539,512,261.68
  5. Step 5: Solve for x
    x = 38,539,512,261.68/209,604.94
  6. Step 6: Final answer
    x = 183,867.39

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1.5x scale

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.