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Finding the Fourth Proportional to 305,555.94, 421,671.69 and 169,598.61

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Solution

The fourth proportional to 305,555.94, 421,671.69 and 169,598.61 is: 234,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,555.94 : 421,671.69 = 169,598.61 : x
  2. Step 2: Convert to fraction form
    305,555.94/421,671.69 = 169,598.61/x
  3. Step 3: Cross multiply
    305,555.94x = 421,671.69 × 169,598.61
  4. Step 4: Simplify right side
    305,555.94x = 71,514,932,500.35
  5. Step 5: Solve for x
    x = 71,514,932,500.35/305,555.94
  6. Step 6: Final answer
    x = 234,048.58

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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.