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Finding the Fourth Proportional to 253,021.78, 379,526.61 and 82,243.28

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Solution

The fourth proportional to 253,021.78, 379,526.61 and 82,243.28 is: 123,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,021.78 : 379,526.61 = 82,243.28 : x
  2. Step 2: Convert to fraction form
    253,021.78/379,526.61 = 82,243.28/x
  3. Step 3: Cross multiply
    253,021.78x = 379,526.61 × 82,243.28
  4. Step 4: Simplify right side
    253,021.78x = 31,213,514,510.91
  5. Step 5: Solve for x
    x = 31,213,514,510.91/253,021.78
  6. Step 6: Final answer
    x = 123,362.96

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1.5x scale

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.