Home / 290,741.25-436,112-91,077.15

Finding the Fourth Proportional to 290,741.25, 436,112 and 91,077.15

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Solution

The fourth proportional to 290,741.25, 436,112 and 91,077.15 is: 136,615.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,741.25 : 436,112 = 91,077.15 : x
  2. Step 2: Convert to fraction form
    290,741.25/436,112 = 91,077.15/x
  3. Step 3: Cross multiply
    290,741.25x = 436,112 × 91,077.15
  4. Step 4: Simplify right side
    290,741.25x = 39,719,838,040.80
  5. Step 5: Solve for x
    x = 39,719,838,040.80/290,741.25
  6. Step 6: Final answer
    x = 136,615.76

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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.