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Finding the Fourth Proportional to 239,003.81, 358,339.61 and 105,811.41

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Solution

The fourth proportional to 239,003.81, 358,339.61 and 105,811.41 is: 158,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,003.81 : 358,339.61 = 105,811.41 : x
  2. Step 2: Convert to fraction form
    239,003.81/358,339.61 = 105,811.41/x
  3. Step 3: Cross multiply
    239,003.81x = 358,339.61 × 105,811.41
  4. Step 4: Simplify right side
    239,003.81x = 37,916,418,863.89
  5. Step 5: Solve for x
    x = 37,916,418,863.89/239,003.81
  6. Step 6: Final answer
    x = 158,643.58

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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.