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Finding the Fourth Proportional to 155,736.90, 218,622.15 and 155,736.90

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Solution

The fourth proportional to 155,736.90, 218,622.15 and 155,736.90 is: 218,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,736.90 : 218,622.15 = 155,736.90 : x
  2. Step 2: Convert to fraction form
    155,736.90/218,622.15 = 155,736.90/x
  3. Step 3: Cross multiply
    155,736.90x = 218,622.15 × 155,736.90
  4. Step 4: Simplify right side
    155,736.90x = 34,047,535,912.34
  5. Step 5: Solve for x
    x = 34,047,535,912.34/155,736.90
  6. Step 6: Final answer
    x = 218,622.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.