Home / 307,112.28-423,815.36-171,143.25

Finding the Fourth Proportional to 307,112.28, 423,815.36 and 171,143.25

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Solution

The fourth proportional to 307,112.28, 423,815.36 and 171,143.25 is: 236,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,112.28 : 423,815.36 = 171,143.25 : x
  2. Step 2: Convert to fraction form
    307,112.28/423,815.36 = 171,143.25/x
  3. Step 3: Cross multiply
    307,112.28x = 423,815.36 × 171,143.25
  4. Step 4: Simplify right side
    307,112.28x = 72,533,135,665.30
  5. Step 5: Solve for x
    x = 72,533,135,665.30/307,112.28
  6. Step 6: Final answer
    x = 236,177.90

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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.