Home / 406,721.52-561,270.20-225,429.62

Finding the Fourth Proportional to 406,721.52, 561,270.20 and 225,429.62

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Solution

The fourth proportional to 406,721.52, 561,270.20 and 225,429.62 is: 311,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,721.52 : 561,270.20 = 225,429.62 : x
  2. Step 2: Convert to fraction form
    406,721.52/561,270.20 = 225,429.62/x
  3. Step 3: Cross multiply
    406,721.52x = 561,270.20 × 225,429.62
  4. Step 4: Simplify right side
    406,721.52x = 126,526,923,969.83
  5. Step 5: Solve for x
    x = 126,526,923,969.83/406,721.52
  6. Step 6: Final answer
    x = 311,089.82

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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.