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Finding the Fourth Proportional to 305,554.59, 421,658.98 and 169,580.56

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Solution

The fourth proportional to 305,554.59, 421,658.98 and 169,580.56 is: 234,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,554.59 : 421,658.98 = 169,580.56 : x
  2. Step 2: Convert to fraction form
    305,554.59/421,658.98 = 169,580.56/x
  3. Step 3: Cross multiply
    305,554.59x = 421,658.98 × 169,580.56
  4. Step 4: Simplify right side
    305,554.59x = 71,505,165,957.43
  5. Step 5: Solve for x
    x = 71,505,165,957.43/305,554.59
  6. Step 6: Final answer
    x = 234,017.65

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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.