Home / 210,731.66-290,812-115,236.32

Finding the Fourth Proportional to 210,731.66, 290,812 and 115,236.32

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Solution

The fourth proportional to 210,731.66, 290,812 and 115,236.32 is: 159,027.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,731.66 : 290,812 = 115,236.32 : x
  2. Step 2: Convert to fraction form
    210,731.66/290,812 = 115,236.32/x
  3. Step 3: Cross multiply
    210,731.66x = 290,812 × 115,236.32
  4. Step 4: Simplify right side
    210,731.66x = 33,512,104,691.84
  5. Step 5: Solve for x
    x = 33,512,104,691.84/210,731.66
  6. Step 6: Final answer
    x = 159,027.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.