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Finding the Fourth Proportional to 290,955.81, 436,433.72 and 80,593.82

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Solution

The fourth proportional to 290,955.81, 436,433.72 and 80,593.82 is: 120,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,955.81 : 436,433.72 = 80,593.82 : x
  2. Step 2: Convert to fraction form
    290,955.81/436,433.72 = 80,593.82/x
  3. Step 3: Cross multiply
    290,955.81x = 436,433.72 × 80,593.82
  4. Step 4: Simplify right side
    290,955.81x = 35,173,858,086.47
  5. Step 5: Solve for x
    x = 35,173,858,086.47/290,955.81
  6. Step 6: Final answer
    x = 120,890.72

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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.