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Finding the Fourth Proportional to 325,661.40, 488,492.10 and 192,691.80

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Solution

The fourth proportional to 325,661.40, 488,492.10 and 192,691.80 is: 289,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,661.40 : 488,492.10 = 192,691.80 : x
  2. Step 2: Convert to fraction form
    325,661.40/488,492.10 = 192,691.80/x
  3. Step 3: Cross multiply
    325,661.40x = 488,492.10 × 192,691.80
  4. Step 4: Simplify right side
    325,661.40x = 94,128,422,034.78
  5. Step 5: Solve for x
    x = 94,128,422,034.78/325,661.40
  6. Step 6: Final answer
    x = 289,037.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.