Home / 231,883.90-319,999.08-128,524.70

Finding the Fourth Proportional to 231,883.90, 319,999.08 and 128,524.70

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Solution

The fourth proportional to 231,883.90, 319,999.08 and 128,524.70 is: 177,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,883.90 : 319,999.08 = 128,524.70 : x
  2. Step 2: Convert to fraction form
    231,883.90/319,999.08 = 128,524.70/x
  3. Step 3: Cross multiply
    231,883.90x = 319,999.08 × 128,524.70
  4. Step 4: Simplify right side
    231,883.90x = 41,127,783,514.66
  5. Step 5: Solve for x
    x = 41,127,783,514.66/231,883.90
  6. Step 6: Final answer
    x = 177,363.69

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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.