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Finding the Fourth Proportional to 305,351.74, 421,387.71 and 167,529.73

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Solution

The fourth proportional to 305,351.74, 421,387.71 and 167,529.73 is: 231,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,351.74 : 421,387.71 = 167,529.73 : x
  2. Step 2: Convert to fraction form
    305,351.74/421,387.71 = 167,529.73/x
  3. Step 3: Cross multiply
    305,351.74x = 421,387.71 × 167,529.73
  4. Step 4: Simplify right side
    305,351.74x = 70,594,969,281.62
  5. Step 5: Solve for x
    x = 70,594,969,281.62/305,351.74
  6. Step 6: Final answer
    x = 231,192.29

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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.