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Finding the Fourth Proportional to 288,380.89, 397,963.29 and 159,319.27

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Solution

The fourth proportional to 288,380.89, 397,963.29 and 159,319.27 is: 219,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,380.89 : 397,963.29 = 159,319.27 : x
  2. Step 2: Convert to fraction form
    288,380.89/397,963.29 = 159,319.27/x
  3. Step 3: Cross multiply
    288,380.89x = 397,963.29 × 159,319.27
  4. Step 4: Simplify right side
    288,380.89x = 63,403,220,849.60
  5. Step 5: Solve for x
    x = 63,403,220,849.60/288,380.89
  6. Step 6: Final answer
    x = 219,859.30

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1.5x scale

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.