Home / 293,621.78-405,178.87-172,739.71

Finding the Fourth Proportional to 293,621.78, 405,178.87 and 172,739.71

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Solution

The fourth proportional to 293,621.78, 405,178.87 and 172,739.71 is: 238,369.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,621.78 : 405,178.87 = 172,739.71 : x
  2. Step 2: Convert to fraction form
    293,621.78/405,178.87 = 172,739.71/x
  3. Step 3: Cross multiply
    293,621.78x = 405,178.87 × 172,739.71
  4. Step 4: Simplify right side
    293,621.78x = 69,990,480,501.93
  5. Step 5: Solve for x
    x = 69,990,480,501.93/293,621.78
  6. Step 6: Final answer
    x = 238,369.51

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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.