Home / 290,617.89-435,691.63-90,835.44

Finding the Fourth Proportional to 290,617.89, 435,691.63 and 90,835.44

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Solution

The fourth proportional to 290,617.89, 435,691.63 and 90,835.44 is: 136,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,617.89 : 435,691.63 = 90,835.44 : x
  2. Step 2: Convert to fraction form
    290,617.89/435,691.63 = 90,835.44/x
  3. Step 3: Cross multiply
    290,617.89x = 435,691.63 × 90,835.44
  4. Step 4: Simplify right side
    290,617.89x = 39,576,240,915.37
  5. Step 5: Solve for x
    x = 39,576,240,915.37/290,617.89
  6. Step 6: Final answer
    x = 136,179.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.