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Finding the Fourth Proportional to 201,907.18, 278,628.18 and 111,271.54

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Solution

The fourth proportional to 201,907.18, 278,628.18 and 111,271.54 is: 153,552.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,907.18 : 278,628.18 = 111,271.54 : x
  2. Step 2: Convert to fraction form
    201,907.18/278,628.18 = 111,271.54/x
  3. Step 3: Cross multiply
    201,907.18x = 278,628.18 × 111,271.54
  4. Step 4: Simplify right side
    201,907.18x = 31,003,386,676.00
  5. Step 5: Solve for x
    x = 31,003,386,676.00/201,907.18
  6. Step 6: Final answer
    x = 153,552.67

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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.