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Finding the Fourth Proportional to 370,313.20, 555,469.80 and 193,166.20

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Solution

The fourth proportional to 370,313.20, 555,469.80 and 193,166.20 is: 289,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,313.20 : 555,469.80 = 193,166.20 : x
  2. Step 2: Convert to fraction form
    370,313.20/555,469.80 = 193,166.20/x
  3. Step 3: Cross multiply
    370,313.20x = 555,469.80 × 193,166.20
  4. Step 4: Simplify right side
    370,313.20x = 107,297,990,480.76
  5. Step 5: Solve for x
    x = 107,297,990,480.76/370,313.20
  6. Step 6: Final answer
    x = 289,749.30

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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.