Home / 380,688.75-571,042.31-127,972.53

Finding the Fourth Proportional to 380,688.75, 571,042.31 and 127,972.53

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Solution

The fourth proportional to 380,688.75, 571,042.31 and 127,972.53 is: 191,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,688.75 : 571,042.31 = 127,972.53 : x
  2. Step 2: Convert to fraction form
    380,688.75/571,042.31 = 127,972.53/x
  3. Step 3: Cross multiply
    380,688.75x = 571,042.31 × 127,972.53
  4. Step 4: Simplify right side
    380,688.75x = 73,077,728,507.88
  5. Step 5: Solve for x
    x = 73,077,728,507.88/380,688.75
  6. Step 6: Final answer
    x = 191,961.88

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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.