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Finding the Fourth Proportional to 522,847.90, 721,684.65 and 308,057.37

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Solution

The fourth proportional to 522,847.90, 721,684.65 and 308,057.37 is: 425,210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,847.90 : 721,684.65 = 308,057.37 : x
  2. Step 2: Convert to fraction form
    522,847.90/721,684.65 = 308,057.37/x
  3. Step 3: Cross multiply
    522,847.90x = 721,684.65 × 308,057.37
  4. Step 4: Simplify right side
    522,847.90x = 222,320,275,248.37
  5. Step 5: Solve for x
    x = 222,320,275,248.37/522,847.90
  6. Step 6: Final answer
    x = 425,210.23

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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.