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Finding the Fourth Proportional to 243,859.06, 336,538.57 and 136,422.68

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Solution

The fourth proportional to 243,859.06, 336,538.57 and 136,422.68 is: 188,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,859.06 : 336,538.57 = 136,422.68 : x
  2. Step 2: Convert to fraction form
    243,859.06/336,538.57 = 136,422.68/x
  3. Step 3: Cross multiply
    243,859.06x = 336,538.57 × 136,422.68
  4. Step 4: Simplify right side
    243,859.06x = 45,911,493,642.77
  5. Step 5: Solve for x
    x = 45,911,493,642.77/243,859.06
  6. Step 6: Final answer
    x = 188,270.61

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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.