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Finding the Fourth Proportional to 406,525.32, 561,009.40 and 225,240.08

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Solution

The fourth proportional to 406,525.32, 561,009.40 and 225,240.08 is: 310,833.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,525.32 : 561,009.40 = 225,240.08 : x
  2. Step 2: Convert to fraction form
    406,525.32/561,009.40 = 225,240.08/x
  3. Step 3: Cross multiply
    406,525.32x = 561,009.40 × 225,240.08
  4. Step 4: Simplify right side
    406,525.32x = 126,361,802,136.75
  5. Step 5: Solve for x
    x = 126,361,802,136.75/406,525.32
  6. Step 6: Final answer
    x = 310,833.78

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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.