Home / 290,811.35-436,286.69-140,876.51

Finding the Fourth Proportional to 290,811.35, 436,286.69 and 140,876.51

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Solution

The fourth proportional to 290,811.35, 436,286.69 and 140,876.51 is: 211,348.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,811.35 : 436,286.69 = 140,876.51 : x
  2. Step 2: Convert to fraction form
    290,811.35/436,286.69 = 140,876.51/x
  3. Step 3: Cross multiply
    290,811.35x = 436,286.69 × 140,876.51
  4. Step 4: Simplify right side
    290,811.35x = 61,462,543,360.84
  5. Step 5: Solve for x
    x = 61,462,543,360.84/290,811.35
  6. Step 6: Final answer
    x = 211,348.51

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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.