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Finding the Fourth Proportional to 209,601.10, 314,401.65 and 200,415.70

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Solution

The fourth proportional to 209,601.10, 314,401.65 and 200,415.70 is: 300,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,601.10 : 314,401.65 = 200,415.70 : x
  2. Step 2: Convert to fraction form
    209,601.10/314,401.65 = 200,415.70/x
  3. Step 3: Cross multiply
    209,601.10x = 314,401.65 × 200,415.70
  4. Step 4: Simplify right side
    209,601.10x = 63,011,026,765.91
  5. Step 5: Solve for x
    x = 63,011,026,765.91/209,601.10
  6. Step 6: Final answer
    x = 300,623.55

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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.