Home / 307,087.20-423,811.56-171,143.28

Finding the Fourth Proportional to 307,087.20, 423,811.56 and 171,143.28

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Solution

The fourth proportional to 307,087.20, 423,811.56 and 171,143.28 is: 236,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,087.20 : 423,811.56 = 171,143.28 : x
  2. Step 2: Convert to fraction form
    307,087.20/423,811.56 = 171,143.28/x
  3. Step 3: Cross multiply
    307,087.20x = 423,811.56 × 171,143.28
  4. Step 4: Simplify right side
    307,087.20x = 72,532,500,480.32
  5. Step 5: Solve for x
    x = 72,532,500,480.32/307,087.20
  6. Step 6: Final answer
    x = 236,195.13

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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.