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Finding the Fourth Proportional to 351,578.98, 485,176.62 and 198,666.67

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Solution

The fourth proportional to 351,578.98, 485,176.62 and 198,666.67 is: 274,158.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,578.98 : 485,176.62 = 198,666.67 : x
  2. Step 2: Convert to fraction form
    351,578.98/485,176.62 = 198,666.67/x
  3. Step 3: Cross multiply
    351,578.98x = 485,176.62 × 198,666.67
  4. Step 4: Simplify right side
    351,578.98x = 96,388,422,463.92
  5. Step 5: Solve for x
    x = 96,388,422,463.92/351,578.98
  6. Step 6: Final answer
    x = 274,158.67

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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.