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Finding the Fourth Proportional to 275,356.68, 413,059.63 and 85,818.66

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Solution

The fourth proportional to 275,356.68, 413,059.63 and 85,818.66 is: 128,735.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,356.68 : 413,059.63 = 85,818.66 : x
  2. Step 2: Convert to fraction form
    275,356.68/413,059.63 = 85,818.66/x
  3. Step 3: Cross multiply
    275,356.68x = 413,059.63 × 85,818.66
  4. Step 4: Simplify right side
    275,356.68x = 35,448,222,102.72
  5. Step 5: Solve for x
    x = 35,448,222,102.72/275,356.68
  6. Step 6: Final answer
    x = 128,735.65

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1.5x scale

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.