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Finding the Fourth Proportional to 326,809.91, 490,026.24 and 126,896.69

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Solution

The fourth proportional to 326,809.91, 490,026.24 and 126,896.69 is: 190,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,809.91 : 490,026.24 = 126,896.69 : x
  2. Step 2: Convert to fraction form
    326,809.91/490,026.24 = 126,896.69/x
  3. Step 3: Cross multiply
    326,809.91x = 490,026.24 × 126,896.69
  4. Step 4: Simplify right side
    326,809.91x = 62,182,709,094.21
  5. Step 5: Solve for x
    x = 62,182,709,094.21/326,809.91
  6. Step 6: Final answer
    x = 190,271.80

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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.