Home / 236,816.28-326,796.75-129,390

Finding the Fourth Proportional to 236,816.28, 326,796.75 and 129,390

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Solution

The fourth proportional to 236,816.28, 326,796.75 and 129,390 is: 178,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,816.28 : 326,796.75 = 129,390 : x
  2. Step 2: Convert to fraction form
    236,816.28/326,796.75 = 129,390/x
  3. Step 3: Cross multiply
    236,816.28x = 326,796.75 × 129,390
  4. Step 4: Simplify right side
    236,816.28x = 42,284,231,482.50
  5. Step 5: Solve for x
    x = 42,284,231,482.50/236,816.28
  6. Step 6: Final answer
    x = 178,552.89

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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.