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Finding the Fourth Proportional to 251,707.89, 347,278.66 and 142,794.27

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Solution

The fourth proportional to 251,707.89, 347,278.66 and 142,794.27 is: 197,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,707.89 : 347,278.66 = 142,794.27 : x
  2. Step 2: Convert to fraction form
    251,707.89/347,278.66 = 142,794.27/x
  3. Step 3: Cross multiply
    251,707.89x = 347,278.66 × 142,794.27
  4. Step 4: Simplify right side
    251,707.89x = 49,589,402,741.28
  5. Step 5: Solve for x
    x = 49,589,402,741.28/251,707.89
  6. Step 6: Final answer
    x = 197,011.71

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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.