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Finding the Fourth Proportional to 253,419.27, 379,813.15 and 221,754.24

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Solution

The fourth proportional to 253,419.27, 379,813.15 and 221,754.24 is: 332,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,419.27 : 379,813.15 = 221,754.24 : x
  2. Step 2: Convert to fraction form
    253,419.27/379,813.15 = 221,754.24/x
  3. Step 3: Cross multiply
    253,419.27x = 379,813.15 × 221,754.24
  4. Step 4: Simplify right side
    253,419.27x = 84,225,176,697.45
  5. Step 5: Solve for x
    x = 84,225,176,697.45/253,419.27
  6. Step 6: Final answer
    x = 332,355.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.