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Finding the Fourth Proportional to 289,126.80, 433,690.20 and 276,004.80

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Solution

The fourth proportional to 289,126.80, 433,690.20 and 276,004.80 is: 414,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,126.80 : 433,690.20 = 276,004.80 : x
  2. Step 2: Convert to fraction form
    289,126.80/433,690.20 = 276,004.80/x
  3. Step 3: Cross multiply
    289,126.80x = 433,690.20 × 276,004.80
  4. Step 4: Simplify right side
    289,126.80x = 119,700,576,912.96
  5. Step 5: Solve for x
    x = 119,700,576,912.96/289,126.80
  6. Step 6: Final answer
    x = 414,007.20

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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.