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Finding the Fourth Proportional to 218,238.79, 301,166.63 and 122,745.49

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Solution

The fourth proportional to 218,238.79, 301,166.63 and 122,745.49 is: 169,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,238.79 : 301,166.63 = 122,745.49 : x
  2. Step 2: Convert to fraction form
    218,238.79/301,166.63 = 122,745.49/x
  3. Step 3: Cross multiply
    218,238.79x = 301,166.63 × 122,745.49
  4. Step 4: Simplify right side
    218,238.79x = 36,966,845,571.00
  5. Step 5: Solve for x
    x = 36,966,845,571.00/218,238.79
  6. Step 6: Final answer
    x = 169,387.15

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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.