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Finding the Fourth Proportional to 648,140.40, 971,749.80 and 248,626.80

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Solution

The fourth proportional to 648,140.40, 971,749.80 and 248,626.80 is: 372,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,140.40 : 971,749.80 = 248,626.80 : x
  2. Step 2: Convert to fraction form
    648,140.40/971,749.80 = 248,626.80/x
  3. Step 3: Cross multiply
    648,140.40x = 971,749.80 × 248,626.80
  4. Step 4: Simplify right side
    648,140.40x = 241,603,043,174.64
  5. Step 5: Solve for x
    x = 241,603,043,174.64/648,140.40
  6. Step 6: Final answer
    x = 372,763.44

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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.