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Finding the Fourth Proportional to 356,873.92, 491,249.76 and 308,453.60

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Solution

The fourth proportional to 356,873.92, 491,249.76 and 308,453.60 is: 424,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,873.92 : 491,249.76 = 308,453.60 : x
  2. Step 2: Convert to fraction form
    356,873.92/491,249.76 = 308,453.60/x
  3. Step 3: Cross multiply
    356,873.92x = 491,249.76 × 308,453.60
  4. Step 4: Simplify right side
    356,873.92x = 151,527,756,971.14
  5. Step 5: Solve for x
    x = 151,527,756,971.14/356,873.92
  6. Step 6: Final answer
    x = 424,597.45

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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.