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Finding the Fourth Proportional to 236,215.78, 354,251 and 67,690.93

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Solution

The fourth proportional to 236,215.78, 354,251 and 67,690.93 is: 101,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,215.78 : 354,251 = 67,690.93 : x
  2. Step 2: Convert to fraction form
    236,215.78/354,251 = 67,690.93/x
  3. Step 3: Cross multiply
    236,215.78x = 354,251 × 67,690.93
  4. Step 4: Simplify right side
    236,215.78x = 23,979,579,643.43
  5. Step 5: Solve for x
    x = 23,979,579,643.43/236,215.78
  6. Step 6: Final answer
    x = 101,515.57

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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.