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Finding the Fourth Proportional to 201,069.32, 277,583.38 and 155,028.40

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Solution

The fourth proportional to 201,069.32, 277,583.38 and 155,028.40 is: 214,022.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,069.32 : 277,583.38 = 155,028.40 : x
  2. Step 2: Convert to fraction form
    201,069.32/277,583.38 = 155,028.40/x
  3. Step 3: Cross multiply
    201,069.32x = 277,583.38 × 155,028.40
  4. Step 4: Simplify right side
    201,069.32x = 43,033,307,267.99
  5. Step 5: Solve for x
    x = 43,033,307,267.99/201,069.32
  6. Step 6: Final answer
    x = 214,022.25

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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.