Home / 290,735.28-436,272.10-122,243.40

Finding the Fourth Proportional to 290,735.28, 436,272.10 and 122,243.40

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Solution

The fourth proportional to 290,735.28, 436,272.10 and 122,243.40 is: 183,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,735.28 : 436,272.10 = 122,243.40 : x
  2. Step 2: Convert to fraction form
    290,735.28/436,272.10 = 122,243.40/x
  3. Step 3: Cross multiply
    290,735.28x = 436,272.10 × 122,243.40
  4. Step 4: Simplify right side
    290,735.28x = 53,331,384,829.14
  5. Step 5: Solve for x
    x = 53,331,384,829.14/290,735.28
  6. Step 6: Final answer
    x = 183,436.23

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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.