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Finding the Fourth Proportional to 250,661.76, 345,913.11 and 137,484.51

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Solution

The fourth proportional to 250,661.76, 345,913.11 and 137,484.51 is: 189,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,661.76 : 345,913.11 = 137,484.51 : x
  2. Step 2: Convert to fraction form
    250,661.76/345,913.11 = 137,484.51/x
  3. Step 3: Cross multiply
    250,661.76x = 345,913.11 × 137,484.51
  4. Step 4: Simplify right side
    250,661.76x = 47,557,694,430.93
  5. Step 5: Solve for x
    x = 47,557,694,430.93/250,661.76
  6. Step 6: Final answer
    x = 189,728.56

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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.