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Finding the Fourth Proportional to 434,080.20, 651,120.30 and 266,118.60

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Solution

The fourth proportional to 434,080.20, 651,120.30 and 266,118.60 is: 399,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,080.20 : 651,120.30 = 266,118.60 : x
  2. Step 2: Convert to fraction form
    434,080.20/651,120.30 = 266,118.60/x
  3. Step 3: Cross multiply
    434,080.20x = 651,120.30 × 266,118.60
  4. Step 4: Simplify right side
    434,080.20x = 173,275,222,667.58
  5. Step 5: Solve for x
    x = 173,275,222,667.58/434,080.20
  6. Step 6: Final answer
    x = 399,177.90

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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.