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Finding the Fourth Proportional to 355,357.09, 490,345.41 and 228,204.91

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Solution

The fourth proportional to 355,357.09, 490,345.41 and 228,204.91 is: 314,892.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,357.09 : 490,345.41 = 228,204.91 : x
  2. Step 2: Convert to fraction form
    355,357.09/490,345.41 = 228,204.91/x
  3. Step 3: Cross multiply
    355,357.09x = 490,345.41 × 228,204.91
  4. Step 4: Simplify right side
    355,357.09x = 111,899,230,157.96
  5. Step 5: Solve for x
    x = 111,899,230,157.96/355,357.09
  6. Step 6: Final answer
    x = 314,892.35

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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.