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Finding the Fourth Proportional to 355,538.36, 490,970.32 and 228,435.42

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Solution

The fourth proportional to 355,538.36, 490,970.32 and 228,435.42 is: 315,451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,538.36 : 490,970.32 = 228,435.42 : x
  2. Step 2: Convert to fraction form
    355,538.36/490,970.32 = 228,435.42/x
  3. Step 3: Cross multiply
    355,538.36x = 490,970.32 × 228,435.42
  4. Step 4: Simplify right side
    355,538.36x = 112,155,011,256.73
  5. Step 5: Solve for x
    x = 112,155,011,256.73/355,538.36
  6. Step 6: Final answer
    x = 315,451.23

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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.