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Finding the Fourth Proportional to 809,768.20, 1,214,681.10 and 248,801.80

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Solution

The fourth proportional to 809,768.20, 1,214,681.10 and 248,801.80 is: 373,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,768.20 : 1,214,681.10 = 248,801.80 : x
  2. Step 2: Convert to fraction form
    809,768.20/1,214,681.10 = 248,801.80/x
  3. Step 3: Cross multiply
    809,768.20x = 1,214,681.10 × 248,801.80
  4. Step 4: Simplify right side
    809,768.20x = 302,214,844,105.98
  5. Step 5: Solve for x
    x = 302,214,844,105.98/809,768.20
  6. Step 6: Final answer
    x = 373,211.55

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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.