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Finding the Fourth Proportional to 358,701.93, 491,423.78 and 345,249.45

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Solution

The fourth proportional to 358,701.93, 491,423.78 and 345,249.45 is: 472,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,701.93 : 491,423.78 = 345,249.45 : x
  2. Step 2: Convert to fraction form
    358,701.93/491,423.78 = 345,249.45/x
  3. Step 3: Cross multiply
    358,701.93x = 491,423.78 × 345,249.45
  4. Step 4: Simplify right side
    358,701.93x = 169,663,790,625.05
  5. Step 5: Solve for x
    x = 169,663,790,625.05/358,701.93
  6. Step 6: Final answer
    x = 472,993.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.