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Finding the Fourth Proportional to 428,197.78, 590,975.85 and 246,874.20

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Solution

The fourth proportional to 428,197.78, 590,975.85 and 246,874.20 is: 340,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,197.78 : 590,975.85 = 246,874.20 : x
  2. Step 2: Convert to fraction form
    428,197.78/590,975.85 = 246,874.20/x
  3. Step 3: Cross multiply
    428,197.78x = 590,975.85 × 246,874.20
  4. Step 4: Simplify right side
    428,197.78x = 145,896,690,188.07
  5. Step 5: Solve for x
    x = 145,896,690,188.07/428,197.78
  6. Step 6: Final answer
    x = 340,722.67

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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.