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Finding the Fourth Proportional to 309,021.48, 426,460.14 and 181,708.92

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Solution

The fourth proportional to 309,021.48, 426,460.14 and 181,708.92 is: 250,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,021.48 : 426,460.14 = 181,708.92 : x
  2. Step 2: Convert to fraction form
    309,021.48/426,460.14 = 181,708.92/x
  3. Step 3: Cross multiply
    309,021.48x = 426,460.14 × 181,708.92
  4. Step 4: Simplify right side
    309,021.48x = 77,491,611,462.45
  5. Step 5: Solve for x
    x = 77,491,611,462.45/309,021.48
  6. Step 6: Final answer
    x = 250,764.48

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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.