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Finding the Fourth Proportional to 365,940.06, 548,910.09 and 155,430.78

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Solution

The fourth proportional to 365,940.06, 548,910.09 and 155,430.78 is: 233,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,940.06 : 548,910.09 = 155,430.78 : x
  2. Step 2: Convert to fraction form
    365,940.06/548,910.09 = 155,430.78/x
  3. Step 3: Cross multiply
    365,940.06x = 548,910.09 × 155,430.78
  4. Step 4: Simplify right side
    365,940.06x = 85,317,523,438.57
  5. Step 5: Solve for x
    x = 85,317,523,438.57/365,940.06
  6. Step 6: Final answer
    x = 233,146.17

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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.