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Finding the Fourth Proportional to 218,179.49, 301,089.49 and 122,685.35

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Solution

The fourth proportional to 218,179.49, 301,089.49 and 122,685.35 is: 169,306.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,179.49 : 301,089.49 = 122,685.35 : x
  2. Step 2: Convert to fraction form
    218,179.49/301,089.49 = 122,685.35/x
  3. Step 3: Cross multiply
    218,179.49x = 301,089.49 × 122,685.35
  4. Step 4: Simplify right side
    218,179.49x = 36,939,269,461.97
  5. Step 5: Solve for x
    x = 36,939,269,461.97/218,179.49
  6. Step 6: Final answer
    x = 169,306.79

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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.