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Finding the Fourth Proportional to 253,389.76, 349,687.20 and 163,965.76

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Solution

The fourth proportional to 253,389.76, 349,687.20 and 163,965.76 is: 226,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,389.76 : 349,687.20 = 163,965.76 : x
  2. Step 2: Convert to fraction form
    253,389.76/349,687.20 = 163,965.76/x
  3. Step 3: Cross multiply
    253,389.76x = 349,687.20 × 163,965.76
  4. Step 4: Simplify right side
    253,389.76x = 57,336,727,510.27
  5. Step 5: Solve for x
    x = 57,336,727,510.27/253,389.76
  6. Step 6: Final answer
    x = 226,278.79

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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.