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Finding the Fourth Proportional to 253,955.43, 349,660.53 and 215,634.33

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Solution

The fourth proportional to 253,955.43, 349,660.53 and 215,634.33 is: 296,897.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,955.43 : 349,660.53 = 215,634.33 : x
  2. Step 2: Convert to fraction form
    253,955.43/349,660.53 = 215,634.33/x
  3. Step 3: Cross multiply
    253,955.43x = 349,660.53 × 215,634.33
  4. Step 4: Simplify right side
    253,955.43x = 75,398,814,113.99
  5. Step 5: Solve for x
    x = 75,398,814,113.99/253,955.43
  6. Step 6: Final answer
    x = 296,897.82

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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.