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Finding the Fourth Proportional to 218,548.60, 301,608.30 and 133,639

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Solution

The fourth proportional to 218,548.60, 301,608.30 and 133,639 is: 184,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,548.60 : 301,608.30 = 133,639 : x
  2. Step 2: Convert to fraction form
    218,548.60/301,608.30 = 133,639/x
  3. Step 3: Cross multiply
    218,548.60x = 301,608.30 × 133,639
  4. Step 4: Simplify right side
    218,548.60x = 40,306,631,603.70
  5. Step 5: Solve for x
    x = 40,306,631,603.70/218,548.60
  6. Step 6: Final answer
    x = 184,428.69

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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.