Home / 406,929.09-561,568.89-225,648.66

Finding the Fourth Proportional to 406,929.09, 561,568.89 and 225,648.66

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Solution

The fourth proportional to 406,929.09, 561,568.89 and 225,648.66 is: 311,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,929.09 : 561,568.89 = 225,648.66 : x
  2. Step 2: Convert to fraction form
    406,929.09/561,568.89 = 225,648.66/x
  3. Step 3: Cross multiply
    406,929.09x = 561,568.89 × 225,648.66
  4. Step 4: Simplify right side
    406,929.09x = 126,717,267,526.19
  5. Step 5: Solve for x
    x = 126,717,267,526.19/406,929.09
  6. Step 6: Final answer
    x = 311,398.89

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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.