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Finding the Fourth Proportional to 217,620.54, 300,241.35 and 122,113.98

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Solution

The fourth proportional to 217,620.54, 300,241.35 and 122,113.98 is: 168,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,620.54 : 300,241.35 = 122,113.98 : x
  2. Step 2: Convert to fraction form
    217,620.54/300,241.35 = 122,113.98/x
  3. Step 3: Cross multiply
    217,620.54x = 300,241.35 × 122,113.98
  4. Step 4: Simplify right side
    217,620.54x = 36,663,666,209.07
  5. Step 5: Solve for x
    x = 36,663,666,209.07/217,620.54
  6. Step 6: Final answer
    x = 168,475.21

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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.