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Finding the Fourth Proportional to 355,261.95, 490,588.90 and 228,158.98

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Solution

The fourth proportional to 355,261.95, 490,588.90 and 228,158.98 is: 315,069.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,261.95 : 490,588.90 = 228,158.98 : x
  2. Step 2: Convert to fraction form
    355,261.95/490,588.90 = 228,158.98/x
  3. Step 3: Cross multiply
    355,261.95x = 490,588.90 × 228,158.98
  4. Step 4: Simplify right side
    355,261.95x = 111,932,261,226.45
  5. Step 5: Solve for x
    x = 111,932,261,226.45/355,261.95
  6. Step 6: Final answer
    x = 315,069.66

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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.