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Finding the Fourth Proportional to 768,835.60, 1,153,253.40 and 200,215.60

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Solution

The fourth proportional to 768,835.60, 1,153,253.40 and 200,215.60 is: 300,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,835.60 : 1,153,253.40 = 200,215.60 : x
  2. Step 2: Convert to fraction form
    768,835.60/1,153,253.40 = 200,215.60/x
  3. Step 3: Cross multiply
    768,835.60x = 1,153,253.40 × 200,215.60
  4. Step 4: Simplify right side
    768,835.60x = 230,899,321,433.04
  5. Step 5: Solve for x
    x = 230,899,321,433.04/768,835.60
  6. Step 6: Final answer
    x = 300,323.40

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Similar ratio
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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.