Home / 210,515.64-315,257.94-135,399.48

Finding the Fourth Proportional to 210,515.64, 315,257.94 and 135,399.48

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Solution

The fourth proportional to 210,515.64, 315,257.94 and 135,399.48 is: 202,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,515.64 : 315,257.94 = 135,399.48 : x
  2. Step 2: Convert to fraction form
    210,515.64/315,257.94 = 135,399.48/x
  3. Step 3: Cross multiply
    210,515.64x = 315,257.94 × 135,399.48
  4. Step 4: Simplify right side
    210,515.64x = 42,685,761,141.87
  5. Step 5: Solve for x
    x = 42,685,761,141.87/210,515.64
  6. Step 6: Final answer
    x = 202,767.65

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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.