Home / 406,929.08-561,563.34-225,653.78

Finding the Fourth Proportional to 406,929.08, 561,563.34 and 225,653.78

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Solution

The fourth proportional to 406,929.08, 561,563.34 and 225,653.78 is: 311,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,929.08 : 561,563.34 = 225,653.78 : x
  2. Step 2: Convert to fraction form
    406,929.08/561,563.34 = 225,653.78/x
  3. Step 3: Cross multiply
    406,929.08x = 561,563.34 × 225,653.78
  4. Step 4: Simplify right side
    406,929.08x = 126,718,890,380.43
  5. Step 5: Solve for x
    x = 126,718,890,380.43/406,929.08
  6. Step 6: Final answer
    x = 311,402.89

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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.