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Finding the Fourth Proportional to 284,310.75, 392,348.84 and 171,155.37

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Solution

The fourth proportional to 284,310.75, 392,348.84 and 171,155.37 is: 236,194.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,310.75 : 392,348.84 = 171,155.37 : x
  2. Step 2: Convert to fraction form
    284,310.75/392,348.84 = 171,155.37/x
  3. Step 3: Cross multiply
    284,310.75x = 392,348.84 × 171,155.37
  4. Step 4: Simplify right side
    284,310.75x = 67,152,610,023.49
  5. Step 5: Solve for x
    x = 67,152,610,023.49/284,310.75
  6. Step 6: Final answer
    x = 236,194.41

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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.