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Finding the Fourth Proportional to 396,019.80, 594,029.70 and 302,707.80

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Solution

The fourth proportional to 396,019.80, 594,029.70 and 302,707.80 is: 454,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,019.80 : 594,029.70 = 302,707.80 : x
  2. Step 2: Convert to fraction form
    396,019.80/594,029.70 = 302,707.80/x
  3. Step 3: Cross multiply
    396,019.80x = 594,029.70 × 302,707.80
  4. Step 4: Simplify right side
    396,019.80x = 179,817,423,621.66
  5. Step 5: Solve for x
    x = 179,817,423,621.66/396,019.80
  6. Step 6: Final answer
    x = 454,061.70

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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.