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Finding the Fourth Proportional to 313,989.20, 471,012.60 and 103,627.60

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Solution

The fourth proportional to 313,989.20, 471,012.60 and 103,627.60 is: 155,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,989.20 : 471,012.60 = 103,627.60 : x
  2. Step 2: Convert to fraction form
    313,989.20/471,012.60 = 103,627.60/x
  3. Step 3: Cross multiply
    313,989.20x = 471,012.60 × 103,627.60
  4. Step 4: Simplify right side
    313,989.20x = 48,809,905,307.76
  5. Step 5: Solve for x
    x = 48,809,905,307.76/313,989.20
  6. Step 6: Final answer
    x = 155,450.91

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1.5x scale

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.