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Finding the Fourth Proportional to 398,709.95, 550,198.85 and 226,604.93

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Solution

The fourth proportional to 398,709.95, 550,198.85 and 226,604.93 is: 312,702.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,709.95 : 550,198.85 = 226,604.93 : x
  2. Step 2: Convert to fraction form
    398,709.95/550,198.85 = 226,604.93/x
  3. Step 3: Cross multiply
    398,709.95x = 550,198.85 × 226,604.93
  4. Step 4: Simplify right side
    398,709.95x = 124,677,768,006.31
  5. Step 5: Solve for x
    x = 124,677,768,006.31/398,709.95
  6. Step 6: Final answer
    x = 312,702.93

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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.