Home / 305,578.24-421,714.56-171,439.36

Finding the Fourth Proportional to 305,578.24, 421,714.56 and 171,439.36

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Solution

The fourth proportional to 305,578.24, 421,714.56 and 171,439.36 is: 236,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,578.24 : 421,714.56 = 171,439.36 : x
  2. Step 2: Convert to fraction form
    305,578.24/421,714.56 = 171,439.36/x
  3. Step 3: Cross multiply
    305,578.24x = 421,714.56 × 171,439.36
  4. Step 4: Simplify right side
    305,578.24x = 72,298,474,269.08
  5. Step 5: Solve for x
    x = 72,298,474,269.08/305,578.24
  6. Step 6: Final answer
    x = 236,595.62

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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.