Home / 290,726.32-436,085.16-80,359.60

Finding the Fourth Proportional to 290,726.32, 436,085.16 and 80,359.60

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Solution

The fourth proportional to 290,726.32, 436,085.16 and 80,359.60 is: 120,538.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,726.32 : 436,085.16 = 80,359.60 : x
  2. Step 2: Convert to fraction form
    290,726.32/436,085.16 = 80,359.60/x
  3. Step 3: Cross multiply
    290,726.32x = 436,085.16 × 80,359.60
  4. Step 4: Simplify right side
    290,726.32x = 35,043,629,023.54
  5. Step 5: Solve for x
    x = 35,043,629,023.54/290,726.32
  6. Step 6: Final answer
    x = 120,538.21

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1.5x scale

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.