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Finding the Fourth Proportional to 265,734,000.80, 398,601,001.20 and 200,260,469.60

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Solution

The fourth proportional to 265,734,000.80, 398,601,001.20 and 200,260,469.60 is: 300,390,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,734,000.80 : 398,601,001.20 = 200,260,469.60 : x
  2. Step 2: Convert to fraction form
    265,734,000.80/398,601,001.20 = 200,260,469.60/x
  3. Step 3: Cross multiply
    265,734,000.80x = 398,601,001.20 × 200,260,469.60
  4. Step 4: Simplify right side
    265,734,000.80x = 79,824,023,683,342,160
  5. Step 5: Solve for x
    x = 79,824,023,683,342,160/265,734,000.80
  6. Step 6: Final answer
    x = 300,390,704.40

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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.