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Finding the Fourth Proportional to 289,293.40, 433,745.70 and 131,440.60

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Solution

The fourth proportional to 289,293.40, 433,745.70 and 131,440.60 is: 197,072.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,293.40 : 433,745.70 = 131,440.60 : x
  2. Step 2: Convert to fraction form
    289,293.40/433,745.70 = 131,440.60/x
  3. Step 3: Cross multiply
    289,293.40x = 433,745.70 × 131,440.60
  4. Step 4: Simplify right side
    289,293.40x = 57,011,795,055.42
  5. Step 5: Solve for x
    x = 57,011,795,055.42/289,293.40
  6. Step 6: Final answer
    x = 197,072.57

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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.