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Finding the Fourth Proportional to 253,521.06, 349,863.21 and 138,797.79

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Solution

The fourth proportional to 253,521.06, 349,863.21 and 138,797.79 is: 191,543.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,521.06 : 349,863.21 = 138,797.79 : x
  2. Step 2: Convert to fraction form
    253,521.06/349,863.21 = 138,797.79/x
  3. Step 3: Cross multiply
    253,521.06x = 349,863.21 × 138,797.79
  4. Step 4: Simplify right side
    253,521.06x = 48,560,240,350.31
  5. Step 5: Solve for x
    x = 48,560,240,350.31/253,521.06
  6. Step 6: Final answer
    x = 191,543.22

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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.