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Finding the Fourth Proportional to 355,196.39, 490,311.27 and 219,285.27

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Solution

The fourth proportional to 355,196.39, 490,311.27 and 219,285.27 is: 302,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,196.39 : 490,311.27 = 219,285.27 : x
  2. Step 2: Convert to fraction form
    355,196.39/490,311.27 = 219,285.27/x
  3. Step 3: Cross multiply
    355,196.39x = 490,311.27 × 219,285.27
  4. Step 4: Simplify right side
    355,196.39x = 107,518,039,225.99
  5. Step 5: Solve for x
    x = 107,518,039,225.99/355,196.39
  6. Step 6: Final answer
    x = 302,700.26

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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.