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Finding the Fourth Proportional to 283,644.70, 391,529.94 and 253,377.46

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Solution

The fourth proportional to 283,644.70, 391,529.94 and 253,377.46 is: 349,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,644.70 : 391,529.94 = 253,377.46 : x
  2. Step 2: Convert to fraction form
    283,644.70/391,529.94 = 253,377.46/x
  3. Step 3: Cross multiply
    283,644.70x = 391,529.94 × 253,377.46
  4. Step 4: Simplify right side
    283,644.70x = 99,204,861,711.15
  5. Step 5: Solve for x
    x = 99,204,861,711.15/283,644.70
  6. Step 6: Final answer
    x = 349,750.45

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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.