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Finding the Fourth Proportional to 250,958.70, 346,323.42 and 137,788.74

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Solution

The fourth proportional to 250,958.70, 346,323.42 and 137,788.74 is: 190,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,958.70 : 346,323.42 = 137,788.74 : x
  2. Step 2: Convert to fraction form
    250,958.70/346,323.42 = 137,788.74/x
  3. Step 3: Cross multiply
    250,958.70x = 346,323.42 × 137,788.74
  4. Step 4: Simplify right side
    250,958.70x = 47,719,467,674.29
  5. Step 5: Solve for x
    x = 47,719,467,674.29/250,958.70
  6. Step 6: Final answer
    x = 190,148.69

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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.