Home / 231,490.10-319,454.61-130,891.70

Finding the Fourth Proportional to 231,490.10, 319,454.61 and 130,891.70

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Solution

The fourth proportional to 231,490.10, 319,454.61 and 130,891.70 is: 180,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,490.10 : 319,454.61 = 130,891.70 : x
  2. Step 2: Convert to fraction form
    231,490.10/319,454.61 = 130,891.70/x
  3. Step 3: Cross multiply
    231,490.10x = 319,454.61 × 130,891.70
  4. Step 4: Simplify right side
    231,490.10x = 41,813,956,975.74
  5. Step 5: Solve for x
    x = 41,813,956,975.74/231,490.10
  6. Step 6: Final answer
    x = 180,629.57

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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.