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Finding the Fourth Proportional to 250,859.40, 346,170.42 and 137,681.34

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Solution

The fourth proportional to 250,859.40, 346,170.42 and 137,681.34 is: 189,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,859.40 : 346,170.42 = 137,681.34 : x
  2. Step 2: Convert to fraction form
    250,859.40/346,170.42 = 137,681.34/x
  3. Step 3: Cross multiply
    250,859.40x = 346,170.42 × 137,681.34
  4. Step 4: Simplify right side
    250,859.40x = 47,661,207,293.96
  5. Step 5: Solve for x
    x = 47,661,207,293.96/250,859.40
  6. Step 6: Final answer
    x = 189,991.71

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1.5x scale

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.