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Finding the Fourth Proportional to 253,174.06, 379,428.85 and 186,301.07

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Solution

The fourth proportional to 253,174.06, 379,428.85 and 186,301.07 is: 279,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,174.06 : 379,428.85 = 186,301.07 : x
  2. Step 2: Convert to fraction form
    253,174.06/379,428.85 = 186,301.07/x
  3. Step 3: Cross multiply
    253,174.06x = 379,428.85 × 186,301.07
  4. Step 4: Simplify right side
    253,174.06x = 70,688,000,743.87
  5. Step 5: Solve for x
    x = 70,688,000,743.87/253,174.06
  6. Step 6: Final answer
    x = 279,207.12

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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.