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Finding the Fourth Proportional to 208,267.70, 312,401.55 and 200,102.90

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Solution

The fourth proportional to 208,267.70, 312,401.55 and 200,102.90 is: 300,154.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,267.70 : 312,401.55 = 200,102.90 : x
  2. Step 2: Convert to fraction form
    208,267.70/312,401.55 = 200,102.90/x
  3. Step 3: Cross multiply
    208,267.70x = 312,401.55 × 200,102.90
  4. Step 4: Simplify right side
    208,267.70x = 62,512,456,119.50
  5. Step 5: Solve for x
    x = 62,512,456,119.50/208,267.70
  6. Step 6: Final answer
    x = 300,154.35

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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.