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Finding the Fourth Proportional to 307,243.94, 423,994.89 and 171,279.01

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Solution

The fourth proportional to 307,243.94, 423,994.89 and 171,279.01 is: 236,364.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,243.94 : 423,994.89 = 171,279.01 : x
  2. Step 2: Convert to fraction form
    307,243.94/423,994.89 = 171,279.01/x
  3. Step 3: Cross multiply
    307,243.94x = 423,994.89 × 171,279.01
  4. Step 4: Simplify right side
    307,243.94x = 72,621,422,466.84
  5. Step 5: Solve for x
    x = 72,621,422,466.84/307,243.94
  6. Step 6: Final answer
    x = 236,364.05

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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.