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Finding the Fourth Proportional to 253,011.34, 379,516.83 and 66,022.84

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Solution

The fourth proportional to 253,011.34, 379,516.83 and 66,022.84 is: 99,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,011.34 : 379,516.83 = 66,022.84 : x
  2. Step 2: Convert to fraction form
    253,011.34/379,516.83 = 66,022.84/x
  3. Step 3: Cross multiply
    253,011.34x = 379,516.83 × 66,022.84
  4. Step 4: Simplify right side
    253,011.34x = 25,056,778,944.40
  5. Step 5: Solve for x
    x = 25,056,778,944.40/253,011.34
  6. Step 6: Final answer
    x = 99,034.21

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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.