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Finding the Fourth Proportional to 253,174.72, 379,429.86 and 186,301.72

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Solution

The fourth proportional to 253,174.72, 379,429.86 and 186,301.72 is: 279,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,174.72 : 379,429.86 = 186,301.72 : x
  2. Step 2: Convert to fraction form
    253,174.72/379,429.86 = 186,301.72/x
  3. Step 3: Cross multiply
    253,174.72x = 379,429.86 × 186,301.72
  4. Step 4: Simplify right side
    253,174.72x = 70,688,435,537.36
  5. Step 5: Solve for x
    x = 70,688,435,537.36/253,174.72
  6. Step 6: Final answer
    x = 279,208.11

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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.