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Finding the Fourth Proportional to 370,475.45, 511,256.64 and 200,709.57

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Solution

The fourth proportional to 370,475.45, 511,256.64 and 200,709.57 is: 276,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,475.45 : 511,256.64 = 200,709.57 : x
  2. Step 2: Convert to fraction form
    370,475.45/511,256.64 = 200,709.57/x
  3. Step 3: Cross multiply
    370,475.45x = 511,256.64 × 200,709.57
  4. Step 4: Simplify right side
    370,475.45x = 102,614,100,374.05
  5. Step 5: Solve for x
    x = 102,614,100,374.05/370,475.45
  6. Step 6: Final answer
    x = 276,979.49

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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.