Home / 290,780.06-436,169.55-91,115.74

Finding the Fourth Proportional to 290,780.06, 436,169.55 and 91,115.74

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Solution

The fourth proportional to 290,780.06, 436,169.55 and 91,115.74 is: 136,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,780.06 : 436,169.55 = 91,115.74 : x
  2. Step 2: Convert to fraction form
    290,780.06/436,169.55 = 91,115.74/x
  3. Step 3: Cross multiply
    290,780.06x = 436,169.55 × 91,115.74
  4. Step 4: Simplify right side
    290,780.06x = 39,741,911,313.72
  5. Step 5: Solve for x
    x = 39,741,911,313.72/290,780.06
  6. Step 6: Final answer
    x = 136,673.44

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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.