Home / 278,017.55-383,629.88-197,415.67

Finding the Fourth Proportional to 278,017.55, 383,629.88 and 197,415.67

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Solution

The fourth proportional to 278,017.55, 383,629.88 and 197,415.67 is: 272,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,017.55 : 383,629.88 = 197,415.67 : x
  2. Step 2: Convert to fraction form
    278,017.55/383,629.88 = 197,415.67/x
  3. Step 3: Cross multiply
    278,017.55x = 383,629.88 × 197,415.67
  4. Step 4: Simplify right side
    278,017.55x = 75,734,546,886.99
  5. Step 5: Solve for x
    x = 75,734,546,886.99/278,017.55
  6. Step 6: Final answer
    x = 272,409.23

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1.5x scale

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.