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Finding the Fourth Proportional to 427,520.72, 589,995.96 and 236,531

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Solution

The fourth proportional to 427,520.72, 589,995.96 and 236,531 is: 326,422.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,520.72 : 589,995.96 = 236,531 : x
  2. Step 2: Convert to fraction form
    427,520.72/589,995.96 = 236,531/x
  3. Step 3: Cross multiply
    427,520.72x = 589,995.96 × 236,531
  4. Step 4: Simplify right side
    427,520.72x = 139,552,334,414.76
  5. Step 5: Solve for x
    x = 139,552,334,414.76/427,520.72
  6. Step 6: Final answer
    x = 326,422.39

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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.