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Finding the Fourth Proportional to 290,340.60, 436,029.30 and 211,543.80

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Solution

The fourth proportional to 290,340.60, 436,029.30 and 211,543.80 is: 317,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,340.60 : 436,029.30 = 211,543.80 : x
  2. Step 2: Convert to fraction form
    290,340.60/436,029.30 = 211,543.80/x
  3. Step 3: Cross multiply
    290,340.60x = 436,029.30 × 211,543.80
  4. Step 4: Simplify right side
    290,340.60x = 92,239,295,033.34
  5. Step 5: Solve for x
    x = 92,239,295,033.34/290,340.60
  6. Step 6: Final answer
    x = 317,693.41

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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.