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Finding the Fourth Proportional to 366,912.60, 550,368.90 and 266,861.40

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Solution

The fourth proportional to 366,912.60, 550,368.90 and 266,861.40 is: 400,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,912.60 : 550,368.90 = 266,861.40 : x
  2. Step 2: Convert to fraction form
    366,912.60/550,368.90 = 266,861.40/x
  3. Step 3: Cross multiply
    366,912.60x = 550,368.90 × 266,861.40
  4. Step 4: Simplify right side
    366,912.60x = 146,872,215,170.46
  5. Step 5: Solve for x
    x = 146,872,215,170.46/366,912.60
  6. Step 6: Final answer
    x = 400,292.10

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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.