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Finding the Fourth Proportional to 307,195.66, 423,931.98 and 171,238.24

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Solution

The fourth proportional to 307,195.66, 423,931.98 and 171,238.24 is: 236,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,195.66 : 423,931.98 = 171,238.24 : x
  2. Step 2: Convert to fraction form
    307,195.66/423,931.98 = 171,238.24/x
  3. Step 3: Cross multiply
    307,195.66x = 423,931.98 × 171,238.24
  4. Step 4: Simplify right side
    307,195.66x = 72,593,366,134.92
  5. Step 5: Solve for x
    x = 72,593,366,134.92/307,195.66
  6. Step 6: Final answer
    x = 236,309.87

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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.