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Finding the Fourth Proportional to 291,908.20, 436,940.70 and 282,692.20

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Solution

The fourth proportional to 291,908.20, 436,940.70 and 282,692.20 is: 423,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,908.20 : 436,940.70 = 282,692.20 : x
  2. Step 2: Convert to fraction form
    291,908.20/436,940.70 = 282,692.20/x
  3. Step 3: Cross multiply
    291,908.20x = 436,940.70 × 282,692.20
  4. Step 4: Simplify right side
    291,908.20x = 123,519,727,752.54
  5. Step 5: Solve for x
    x = 123,519,727,752.54/291,908.20
  6. Step 6: Final answer
    x = 423,145.80

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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.