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Finding the Fourth Proportional to 210,995.36, 316,274.34 and 131,928.02

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Solution

The fourth proportional to 210,995.36, 316,274.34 and 131,928.02 is: 197,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,995.36 : 316,274.34 = 131,928.02 : x
  2. Step 2: Convert to fraction form
    210,995.36/316,274.34 = 131,928.02/x
  3. Step 3: Cross multiply
    210,995.36x = 316,274.34 × 131,928.02
  4. Step 4: Simplify right side
    210,995.36x = 41,725,447,453.01
  5. Step 5: Solve for x
    x = 41,725,447,453.01/210,995.36
  6. Step 6: Final answer
    x = 197,755.28

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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.