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Finding the Fourth Proportional to 322,484.41, 483,730.65 and 85,825.63

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Solution

The fourth proportional to 322,484.41, 483,730.65 and 85,825.63 is: 128,739.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,484.41 : 483,730.65 = 85,825.63 : x
  2. Step 2: Convert to fraction form
    322,484.41/483,730.65 = 85,825.63/x
  3. Step 3: Cross multiply
    322,484.41x = 483,730.65 × 85,825.63
  4. Step 4: Simplify right side
    322,484.41x = 41,516,487,357.43
  5. Step 5: Solve for x
    x = 41,516,487,357.43/322,484.41
  6. Step 6: Final answer
    x = 128,739.52

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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.