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Finding the Fourth Proportional to 307,612.77, 424,504.24 and 171,638.78

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Solution

The fourth proportional to 307,612.77, 424,504.24 and 171,638.78 is: 236,860.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,612.77 : 424,504.24 = 171,638.78 : x
  2. Step 2: Convert to fraction form
    307,612.77/424,504.24 = 171,638.78/x
  3. Step 3: Cross multiply
    307,612.77x = 424,504.24 × 171,638.78
  4. Step 4: Simplify right side
    307,612.77x = 72,861,389,858.43
  5. Step 5: Solve for x
    x = 72,861,389,858.43/307,612.77
  6. Step 6: Final answer
    x = 236,860.74

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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.