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Finding the Fourth Proportional to 259,339.26, 386,980.58 and 205,420.26

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Solution

The fourth proportional to 259,339.26, 386,980.58 and 205,420.26 is: 306,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,339.26 : 386,980.58 = 205,420.26 : x
  2. Step 2: Convert to fraction form
    259,339.26/386,980.58 = 205,420.26/x
  3. Step 3: Cross multiply
    259,339.26x = 386,980.58 × 205,420.26
  4. Step 4: Simplify right side
    259,339.26x = 79,493,650,331.45
  5. Step 5: Solve for x
    x = 79,493,650,331.45/259,339.26
  6. Step 6: Final answer
    x = 306,523.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.