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Finding the Fourth Proportional to 438,574.54, 605,066.12 and 275,161.80

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Solution

The fourth proportional to 438,574.54, 605,066.12 and 275,161.80 is: 379,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,574.54 : 605,066.12 = 275,161.80 : x
  2. Step 2: Convert to fraction form
    438,574.54/605,066.12 = 275,161.80/x
  3. Step 3: Cross multiply
    438,574.54x = 605,066.12 × 275,161.80
  4. Step 4: Simplify right side
    438,574.54x = 166,491,082,698.22
  5. Step 5: Solve for x
    x = 166,491,082,698.22/438,574.54
  6. Step 6: Final answer
    x = 379,618.67

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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.