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Finding the Fourth Proportional to 372,133.80, 558,200.70 and 339,474.60

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Solution

The fourth proportional to 372,133.80, 558,200.70 and 339,474.60 is: 509,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,133.80 : 558,200.70 = 339,474.60 : x
  2. Step 2: Convert to fraction form
    372,133.80/558,200.70 = 339,474.60/x
  3. Step 3: Cross multiply
    372,133.80x = 558,200.70 × 339,474.60
  4. Step 4: Simplify right side
    372,133.80x = 189,494,959,352.22
  5. Step 5: Solve for x
    x = 189,494,959,352.22/372,133.80
  6. Step 6: Final answer
    x = 509,211.90

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Similar ratio
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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.