Home / 406,680.78-561,204.20-225,395.81

Finding the Fourth Proportional to 406,680.78, 561,204.20 and 225,395.81

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Solution

The fourth proportional to 406,680.78, 561,204.20 and 225,395.81 is: 311,037.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,680.78 : 561,204.20 = 225,395.81 : x
  2. Step 2: Convert to fraction form
    406,680.78/561,204.20 = 225,395.81/x
  3. Step 3: Cross multiply
    406,680.78x = 561,204.20 × 225,395.81
  4. Step 4: Simplify right side
    406,680.78x = 126,493,071,301.40
  5. Step 5: Solve for x
    x = 126,493,071,301.40/406,680.78
  6. Step 6: Final answer
    x = 311,037.74

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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.