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Finding the Fourth Proportional to 253,638.60, 349,224.60 and 215,318.73

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Solution

The fourth proportional to 253,638.60, 349,224.60 and 215,318.73 is: 296,463.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,638.60 : 349,224.60 = 215,318.73 : x
  2. Step 2: Convert to fraction form
    253,638.60/349,224.60 = 215,318.73/x
  3. Step 3: Cross multiply
    253,638.60x = 349,224.60 × 215,318.73
  4. Step 4: Simplify right side
    253,638.60x = 75,194,597,356.76
  5. Step 5: Solve for x
    x = 75,194,597,356.76/253,638.60
  6. Step 6: Final answer
    x = 296,463.54

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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.