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Finding the Fourth Proportional to 406,587.81, 561,103.47 and 225,282.80

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Solution

The fourth proportional to 406,587.81, 561,103.47 and 225,282.80 is: 310,897.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,587.81 : 561,103.47 = 225,282.80 : x
  2. Step 2: Convert to fraction form
    406,587.81/561,103.47 = 225,282.80/x
  3. Step 3: Cross multiply
    406,587.81x = 561,103.47 × 225,282.80
  4. Step 4: Simplify right side
    406,587.81x = 126,406,958,005.80
  5. Step 5: Solve for x
    x = 126,406,958,005.80/406,587.81
  6. Step 6: Final answer
    x = 310,897.07

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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.