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Finding the Fourth Proportional to 253,638.64, 350,007.37 and 138,895.01

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Solution

The fourth proportional to 253,638.64, 350,007.37 and 138,895.01 is: 191,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,638.64 : 350,007.37 = 138,895.01 : x
  2. Step 2: Convert to fraction form
    253,638.64/350,007.37 = 138,895.01/x
  3. Step 3: Cross multiply
    253,638.64x = 350,007.37 × 138,895.01
  4. Step 4: Simplify right side
    253,638.64x = 48,614,276,371.48
  5. Step 5: Solve for x
    x = 48,614,276,371.48/253,638.64
  6. Step 6: Final answer
    x = 191,667.47

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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.