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Finding the Fourth Proportional to 284,139.51, 392,163.38 and 169,425.56

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Solution

The fourth proportional to 284,139.51, 392,163.38 and 169,425.56 is: 233,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,139.51 : 392,163.38 = 169,425.56 : x
  2. Step 2: Convert to fraction form
    284,139.51/392,163.38 = 169,425.56/x
  3. Step 3: Cross multiply
    284,139.51x = 392,163.38 × 169,425.56
  4. Step 4: Simplify right side
    284,139.51x = 66,442,497,460.05
  5. Step 5: Solve for x
    x = 66,442,497,460.05/284,139.51
  6. Step 6: Final answer
    x = 233,837.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.