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Finding the Fourth Proportional to 290,682, 435,972.60 and 80,263.44

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Solution

The fourth proportional to 290,682, 435,972.60 and 80,263.44 is: 120,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,682 : 435,972.60 = 80,263.44 : x
  2. Step 2: Convert to fraction form
    290,682/435,972.60 = 80,263.44/x
  3. Step 3: Cross multiply
    290,682x = 435,972.60 × 80,263.44
  4. Step 4: Simplify right side
    290,682x = 34,992,660,621.74
  5. Step 5: Solve for x
    x = 34,992,660,621.74/290,682
  6. Step 6: Final answer
    x = 120,381.24

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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.