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Finding the Fourth Proportional to 628,368.45, 942,435.60 and 201,911.67

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Solution

The fourth proportional to 628,368.45, 942,435.60 and 201,911.67 is: 302,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,368.45 : 942,435.60 = 201,911.67 : x
  2. Step 2: Convert to fraction form
    628,368.45/942,435.60 = 201,911.67/x
  3. Step 3: Cross multiply
    628,368.45x = 942,435.60 × 201,911.67
  4. Step 4: Simplify right side
    628,368.45x = 190,288,745,863.45
  5. Step 5: Solve for x
    x = 190,288,745,863.45/628,368.45
  6. Step 6: Final answer
    x = 302,829.89

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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.