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Finding the Fourth Proportional to 361,918.80, 499,450.68 and 198,574.20

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Solution

The fourth proportional to 361,918.80, 499,450.68 and 198,574.20 is: 274,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,918.80 : 499,450.68 = 198,574.20 : x
  2. Step 2: Convert to fraction form
    361,918.80/499,450.68 = 198,574.20/x
  3. Step 3: Cross multiply
    361,918.80x = 499,450.68 × 198,574.20
  4. Step 4: Simplify right side
    361,918.80x = 99,178,019,220.46
  5. Step 5: Solve for x
    x = 99,178,019,220.46/361,918.80
  6. Step 6: Final answer
    x = 274,033.90

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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.