Home / 231,431.49-319,405.02-129,462.60

Finding the Fourth Proportional to 231,431.49, 319,405.02 and 129,462.60

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Solution

The fourth proportional to 231,431.49, 319,405.02 and 129,462.60 is: 178,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,431.49 : 319,405.02 = 129,462.60 : x
  2. Step 2: Convert to fraction form
    231,431.49/319,405.02 = 129,462.60/x
  3. Step 3: Cross multiply
    231,431.49x = 319,405.02 × 129,462.60
  4. Step 4: Simplify right side
    231,431.49x = 41,351,004,342.25
  5. Step 5: Solve for x
    x = 41,351,004,342.25/231,431.49
  6. Step 6: Final answer
    x = 178,674.93

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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.