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Finding the Fourth Proportional to 253,218.91, 349,427.96 and 138,474.91

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Solution

The fourth proportional to 253,218.91, 349,427.96 and 138,474.91 is: 191,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,218.91 : 349,427.96 = 138,474.91 : x
  2. Step 2: Convert to fraction form
    253,218.91/349,427.96 = 138,474.91/x
  3. Step 3: Cross multiply
    253,218.91x = 349,427.96 × 138,474.91
  4. Step 4: Simplify right side
    253,218.91x = 48,387,004,092.73
  5. Step 5: Solve for x
    x = 48,387,004,092.73/253,218.91
  6. Step 6: Final answer
    x = 191,087.64

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1.5x scale

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.