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Finding the Fourth Proportional to 396,319.63, 594,354.55 and 130,018.09

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Solution

The fourth proportional to 396,319.63, 594,354.55 and 130,018.09 is: 194,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,319.63 : 594,354.55 = 130,018.09 : x
  2. Step 2: Convert to fraction form
    396,319.63/594,354.55 = 130,018.09/x
  3. Step 3: Cross multiply
    396,319.63x = 594,354.55 × 130,018.09
  4. Step 4: Simplify right side
    396,319.63x = 77,276,843,373.81
  5. Step 5: Solve for x
    x = 77,276,843,373.81/396,319.63
  6. Step 6: Final answer
    x = 194,986.16

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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.