Home / 380,669.76-571,057.08-127,969.86

Finding the Fourth Proportional to 380,669.76, 571,057.08 and 127,969.86

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Solution

The fourth proportional to 380,669.76, 571,057.08 and 127,969.86 is: 191,972.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,669.76 : 571,057.08 = 127,969.86 : x
  2. Step 2: Convert to fraction form
    380,669.76/571,057.08 = 127,969.86/x
  3. Step 3: Cross multiply
    380,669.76x = 571,057.08 × 127,969.86
  4. Step 4: Simplify right side
    380,669.76x = 73,078,094,579.61
  5. Step 5: Solve for x
    x = 73,078,094,579.61/380,669.76
  6. Step 6: Final answer
    x = 191,972.42

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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.