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Finding the Fourth Proportional to 309,321, 426,855.72 and 182,004.84

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Solution

The fourth proportional to 309,321, 426,855.72 and 182,004.84 is: 251,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,321 : 426,855.72 = 182,004.84 : x
  2. Step 2: Convert to fraction form
    309,321/426,855.72 = 182,004.84/x
  3. Step 3: Cross multiply
    309,321x = 426,855.72 × 182,004.84
  4. Step 4: Simplify right side
    309,321x = 77,689,807,021.68
  5. Step 5: Solve for x
    x = 77,689,807,021.68/309,321
  6. Step 6: Final answer
    x = 251,162.41

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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.