Home / 231,786.34-319,854.09-142,345.06

Finding the Fourth Proportional to 231,786.34, 319,854.09 and 142,345.06

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Solution

The fourth proportional to 231,786.34, 319,854.09 and 142,345.06 is: 196,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.34 : 319,854.09 = 142,345.06 : x
  2. Step 2: Convert to fraction form
    231,786.34/319,854.09 = 142,345.06/x
  3. Step 3: Cross multiply
    231,786.34x = 319,854.09 × 142,345.06
  4. Step 4: Simplify right side
    231,786.34x = 45,529,649,632.30
  5. Step 5: Solve for x
    x = 45,529,649,632.30/231,786.34
  6. Step 6: Final answer
    x = 196,429.39

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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.