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Finding the Fourth Proportional to 217,033,385.80, 325,550,078.70 and 200,405,187.40

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Solution

The fourth proportional to 217,033,385.80, 325,550,078.70 and 200,405,187.40 is: 300,607,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,033,385.80 : 325,550,078.70 = 200,405,187.40 : x
  2. Step 2: Convert to fraction form
    217,033,385.80/325,550,078.70 = 200,405,187.40/x
  3. Step 3: Cross multiply
    217,033,385.80x = 325,550,078.70 × 200,405,187.40
  4. Step 4: Simplify right side
    217,033,385.80x = 65,241,924,529,958,248
  5. Step 5: Solve for x
    x = 65,241,924,529,958,248/217,033,385.80
  6. Step 6: Final answer
    x = 300,607,781.10

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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.