Home / 213,954.12-320,998.28-128,663.16

Finding the Fourth Proportional to 213,954.12, 320,998.28 and 128,663.16

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Solution

The fourth proportional to 213,954.12, 320,998.28 and 128,663.16 is: 193,035.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,954.12 : 320,998.28 = 128,663.16 : x
  2. Step 2: Convert to fraction form
    213,954.12/320,998.28 = 128,663.16/x
  3. Step 3: Cross multiply
    213,954.12x = 320,998.28 × 128,663.16
  4. Step 4: Simplify right side
    213,954.12x = 41,300,653,059.36
  5. Step 5: Solve for x
    x = 41,300,653,059.36/213,954.12
  6. Step 6: Final answer
    x = 193,035.09

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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.