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Finding the Fourth Proportional to 356,364.91, 491,597.16 and 220,355.38

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Solution

The fourth proportional to 356,364.91, 491,597.16 and 220,355.38 is: 303,975.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,364.91 : 491,597.16 = 220,355.38 : x
  2. Step 2: Convert to fraction form
    356,364.91/491,597.16 = 220,355.38/x
  3. Step 3: Cross multiply
    356,364.91x = 491,597.16 × 220,355.38
  4. Step 4: Simplify right side
    356,364.91x = 108,326,078,998.72
  5. Step 5: Solve for x
    x = 108,326,078,998.72/356,364.91
  6. Step 6: Final answer
    x = 303,975.16

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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.