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Finding the Fourth Proportional to 304,962.15, 420,861.15 and 168,995.79

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Solution

The fourth proportional to 304,962.15, 420,861.15 and 168,995.79 is: 233,221.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,962.15 : 420,861.15 = 168,995.79 : x
  2. Step 2: Convert to fraction form
    304,962.15/420,861.15 = 168,995.79/x
  3. Step 3: Cross multiply
    304,962.15x = 420,861.15 × 168,995.79
  4. Step 4: Simplify right side
    304,962.15x = 71,123,762,524.56
  5. Step 5: Solve for x
    x = 71,123,762,524.56/304,962.15
  6. Step 6: Final answer
    x = 233,221.61

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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.