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Finding the Fourth Proportional to 396,638.64, 594,831.84 and 130,337.52

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Solution

The fourth proportional to 396,638.64, 594,831.84 and 130,337.52 is: 195,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,638.64 : 594,831.84 = 130,337.52 : x
  2. Step 2: Convert to fraction form
    396,638.64/594,831.84 = 130,337.52/x
  3. Step 3: Cross multiply
    396,638.64x = 594,831.84 × 130,337.52
  4. Step 4: Simplify right side
    396,638.64x = 77,528,906,842.64
  5. Step 5: Solve for x
    x = 77,528,906,842.64/396,638.64
  6. Step 6: Final answer
    x = 195,464.84

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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.