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Finding the Fourth Proportional to 406,990.08, 561,703.68 and 225,742.32

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Solution

The fourth proportional to 406,990.08, 561,703.68 and 225,742.32 is: 311,556.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,990.08 : 561,703.68 = 225,742.32 : x
  2. Step 2: Convert to fraction form
    406,990.08/561,703.68 = 225,742.32/x
  3. Step 3: Cross multiply
    406,990.08x = 561,703.68 × 225,742.32
  4. Step 4: Simplify right side
    406,990.08x = 126,800,291,875.74
  5. Step 5: Solve for x
    x = 126,800,291,875.74/406,990.08
  6. Step 6: Final answer
    x = 311,556.22

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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.