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Finding the Fourth Proportional to 290,962.84, 436,444.20 and 80,600.80

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Solution

The fourth proportional to 290,962.84, 436,444.20 and 80,600.80 is: 120,901.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,962.84 : 436,444.20 = 80,600.80 : x
  2. Step 2: Convert to fraction form
    290,962.84/436,444.20 = 80,600.80/x
  3. Step 3: Cross multiply
    290,962.84x = 436,444.20 × 80,600.80
  4. Step 4: Simplify right side
    290,962.84x = 35,177,751,675.36
  5. Step 5: Solve for x
    x = 35,177,751,675.36/290,962.84
  6. Step 6: Final answer
    x = 120,901.18

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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.