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Finding the Fourth Proportional to 218,184.21, 301,083.21 and 122,685.21

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Solution

The fourth proportional to 218,184.21, 301,083.21 and 122,685.21 is: 169,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,184.21 : 301,083.21 = 122,685.21 : x
  2. Step 2: Convert to fraction form
    218,184.21/301,083.21 = 122,685.21/x
  3. Step 3: Cross multiply
    218,184.21x = 301,083.21 × 122,685.21
  4. Step 4: Simplify right side
    218,184.21x = 36,938,456,846.32
  5. Step 5: Solve for x
    x = 36,938,456,846.32/218,184.21
  6. Step 6: Final answer
    x = 169,299.40

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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.