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Finding the Fourth Proportional to 407,328.09, 610,992.09 and 126,867.21

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Solution

The fourth proportional to 407,328.09, 610,992.09 and 126,867.21 is: 190,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,328.09 : 610,992.09 = 126,867.21 : x
  2. Step 2: Convert to fraction form
    407,328.09/610,992.09 = 126,867.21/x
  3. Step 3: Cross multiply
    407,328.09x = 610,992.09 × 126,867.21
  4. Step 4: Simplify right side
    407,328.09x = 77,514,861,790.37
  5. Step 5: Solve for x
    x = 77,514,861,790.37/407,328.09
  6. Step 6: Final answer
    x = 190,300.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.