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Finding the Fourth Proportional to 253,381.31, 349,642.39 and 171,543.08

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Solution

The fourth proportional to 253,381.31, 349,642.39 and 171,543.08 is: 236,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,381.31 : 349,642.39 = 171,543.08 : x
  2. Step 2: Convert to fraction form
    253,381.31/349,642.39 = 171,543.08/x
  3. Step 3: Cross multiply
    253,381.31x = 349,642.39 × 171,543.08
  4. Step 4: Simplify right side
    253,381.31x = 59,978,732,479.16
  5. Step 5: Solve for x
    x = 59,978,732,479.16/253,381.31
  6. Step 6: Final answer
    x = 236,713.33

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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.