Home / 231,409.28-319,336.08-130,809.44

Finding the Fourth Proportional to 231,409.28, 319,336.08 and 130,809.44

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Solution

The fourth proportional to 231,409.28, 319,336.08 and 130,809.44 is: 180,512.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,409.28 : 319,336.08 = 130,809.44 : x
  2. Step 2: Convert to fraction form
    231,409.28/319,336.08 = 130,809.44/x
  3. Step 3: Cross multiply
    231,409.28x = 319,336.08 × 130,809.44
  4. Step 4: Simplify right side
    231,409.28x = 41,772,173,796.60
  5. Step 5: Solve for x
    x = 41,772,173,796.60/231,409.28
  6. Step 6: Final answer
    x = 180,512.09

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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.