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Finding the Fourth Proportional to 295,579.80, 443,369.70 and 290,914.20

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Solution

The fourth proportional to 295,579.80, 443,369.70 and 290,914.20 is: 436,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,579.80 : 443,369.70 = 290,914.20 : x
  2. Step 2: Convert to fraction form
    295,579.80/443,369.70 = 290,914.20/x
  3. Step 3: Cross multiply
    295,579.80x = 443,369.70 × 290,914.20
  4. Step 4: Simplify right side
    295,579.80x = 128,982,541,579.74
  5. Step 5: Solve for x
    x = 128,982,541,579.74/295,579.80
  6. Step 6: Final answer
    x = 436,371.30

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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.