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Finding the Fourth Proportional to 406,987.25, 561,642.45 and 225,726.89

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Solution

The fourth proportional to 406,987.25, 561,642.45 and 225,726.89 is: 311,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,987.25 : 561,642.45 = 225,726.89 : x
  2. Step 2: Convert to fraction form
    406,987.25/561,642.45 = 225,726.89/x
  3. Step 3: Cross multiply
    406,987.25x = 561,642.45 × 225,726.89
  4. Step 4: Simplify right side
    406,987.25x = 126,777,803,530.48
  5. Step 5: Solve for x
    x = 126,777,803,530.48/406,987.25
  6. Step 6: Final answer
    x = 311,503.13

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1.5x scale

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.