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Finding the Fourth Proportional to 307,044.72, 423,752.76 and 171,100.80

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Solution

The fourth proportional to 307,044.72, 423,752.76 and 171,100.80 is: 236,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,044.72 : 423,752.76 = 171,100.80 : x
  2. Step 2: Convert to fraction form
    307,044.72/423,752.76 = 171,100.80/x
  3. Step 3: Cross multiply
    307,044.72x = 423,752.76 × 171,100.80
  4. Step 4: Simplify right side
    307,044.72x = 72,504,436,238.21
  5. Step 5: Solve for x
    x = 72,504,436,238.21/307,044.72
  6. Step 6: Final answer
    x = 236,136.40

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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.