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Finding the Fourth Proportional to 406,391.86, 560,852.34 and 225,120.64

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Solution

The fourth proportional to 406,391.86, 560,852.34 and 225,120.64 is: 310,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,391.86 : 560,852.34 = 225,120.64 : x
  2. Step 2: Convert to fraction form
    406,391.86/560,852.34 = 225,120.64/x
  3. Step 3: Cross multiply
    406,391.86x = 560,852.34 × 225,120.64
  4. Step 4: Simplify right side
    406,391.86x = 126,259,437,726.30
  5. Step 5: Solve for x
    x = 126,259,437,726.30/406,391.86
  6. Step 6: Final answer
    x = 310,683.97

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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.