Home / 406,619.88-561,136.74-225,334.78

Finding the Fourth Proportional to 406,619.88, 561,136.74 and 225,334.78

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Solution

The fourth proportional to 406,619.88, 561,136.74 and 225,334.78 is: 310,962.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,619.88 : 561,136.74 = 225,334.78 : x
  2. Step 2: Convert to fraction form
    406,619.88/561,136.74 = 225,334.78/x
  3. Step 3: Cross multiply
    406,619.88x = 561,136.74 × 225,334.78
  4. Step 4: Simplify right side
    406,619.88x = 126,443,623,857.82
  5. Step 5: Solve for x
    x = 126,443,623,857.82/406,619.88
  6. Step 6: Final answer
    x = 310,962.72

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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.