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Finding the Fourth Proportional to 212,362.44, 318,543.64 and 54,591.04

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Solution

The fourth proportional to 212,362.44, 318,543.64 and 54,591.04 is: 81,886.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,362.44 : 318,543.64 = 54,591.04 : x
  2. Step 2: Convert to fraction form
    212,362.44/318,543.64 = 54,591.04/x
  3. Step 3: Cross multiply
    212,362.44x = 318,543.64 × 54,591.04
  4. Step 4: Simplify right side
    212,362.44x = 17,389,628,592.99
  5. Step 5: Solve for x
    x = 17,389,628,592.99/212,362.44
  6. Step 6: Final answer
    x = 81,886.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.