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Finding the Fourth Proportional to 481,912.59, 665,056.53 and 290,888.67

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Solution

The fourth proportional to 481,912.59, 665,056.53 and 290,888.67 is: 401,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,912.59 : 665,056.53 = 290,888.67 : x
  2. Step 2: Convert to fraction form
    481,912.59/665,056.53 = 290,888.67/x
  3. Step 3: Cross multiply
    481,912.59x = 665,056.53 × 290,888.67
  4. Step 4: Simplify right side
    481,912.59x = 193,457,409,486.52
  5. Step 5: Solve for x
    x = 193,457,409,486.52/481,912.59
  6. Step 6: Final answer
    x = 401,436.72

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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.