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Finding the Fourth Proportional to 210,003.70, 315,005.55 and 201,255.70

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Solution

The fourth proportional to 210,003.70, 315,005.55 and 201,255.70 is: 301,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,003.70 : 315,005.55 = 201,255.70 : x
  2. Step 2: Convert to fraction form
    210,003.70/315,005.55 = 201,255.70/x
  3. Step 3: Cross multiply
    210,003.70x = 315,005.55 × 201,255.70
  4. Step 4: Simplify right side
    210,003.70x = 63,396,662,469.14
  5. Step 5: Solve for x
    x = 63,396,662,469.14/210,003.70
  6. Step 6: Final answer
    x = 301,883.55

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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.