Home / 210,921.60-315,988.68-140,850.12

Finding the Fourth Proportional to 210,921.60, 315,988.68 and 140,850.12

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Solution

The fourth proportional to 210,921.60, 315,988.68 and 140,850.12 is: 211,012.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,921.60 : 315,988.68 = 140,850.12 : x
  2. Step 2: Convert to fraction form
    210,921.60/315,988.68 = 140,850.12/x
  3. Step 3: Cross multiply
    210,921.60x = 315,988.68 × 140,850.12
  4. Step 4: Simplify right side
    210,921.60x = 44,507,043,496.64
  5. Step 5: Solve for x
    x = 44,507,043,496.64/210,921.60
  6. Step 6: Final answer
    x = 211,012.26

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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.