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Finding the Fourth Proportional to 555,211.30, 766,190.73 and 300,562.42

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Solution

The fourth proportional to 555,211.30, 766,190.73 and 300,562.42 is: 414,775.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,211.30 : 766,190.73 = 300,562.42 : x
  2. Step 2: Convert to fraction form
    555,211.30/766,190.73 = 300,562.42/x
  3. Step 3: Cross multiply
    555,211.30x = 766,190.73 × 300,562.42
  4. Step 4: Simplify right side
    555,211.30x = 230,288,139,990.37
  5. Step 5: Solve for x
    x = 230,288,139,990.37/555,211.30
  6. Step 6: Final answer
    x = 414,775.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.