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Finding the Fourth Proportional to 218,927.40, 327,699.90 and 212,015.40

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Solution

The fourth proportional to 218,927.40, 327,699.90 and 212,015.40 is: 317,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,927.40 : 327,699.90 = 212,015.40 : x
  2. Step 2: Convert to fraction form
    218,927.40/327,699.90 = 212,015.40/x
  3. Step 3: Cross multiply
    218,927.40x = 327,699.90 × 212,015.40
  4. Step 4: Simplify right side
    218,927.40x = 69,477,425,378.46
  5. Step 5: Solve for x
    x = 69,477,425,378.46/218,927.40
  6. Step 6: Final answer
    x = 317,353.72

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1.5x scale

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.