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Finding the Fourth Proportional to 253,173.72, 379,428.36 and 186,300.72

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Solution

The fourth proportional to 253,173.72, 379,428.36 and 186,300.72 is: 279,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,173.72 : 379,428.36 = 186,300.72 : x
  2. Step 2: Convert to fraction form
    253,173.72/379,428.36 = 186,300.72/x
  3. Step 3: Cross multiply
    253,173.72x = 379,428.36 × 186,300.72
  4. Step 4: Simplify right side
    253,173.72x = 70,687,776,656.42
  5. Step 5: Solve for x
    x = 70,687,776,656.42/253,173.72
  6. Step 6: Final answer
    x = 279,206.61

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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.