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Finding the Fourth Proportional to 305,348.74, 421,383.57 and 167,526.73

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Solution

The fourth proportional to 305,348.74, 421,383.57 and 167,526.73 is: 231,188.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,348.74 : 421,383.57 = 167,526.73 : x
  2. Step 2: Convert to fraction form
    305,348.74/421,383.57 = 167,526.73/x
  3. Step 3: Cross multiply
    305,348.74x = 421,383.57 × 167,526.73
  4. Step 4: Simplify right side
    305,348.74x = 70,593,011,456.33
  5. Step 5: Solve for x
    x = 70,593,011,456.33/305,348.74
  6. Step 6: Final answer
    x = 231,188.16

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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.