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Finding the Fourth Proportional to 488,133.54, 673,544.10 and 306,717

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Solution

The fourth proportional to 488,133.54, 673,544.10 and 306,717 is: 423,219.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,133.54 : 673,544.10 = 306,717 : x
  2. Step 2: Convert to fraction form
    488,133.54/673,544.10 = 306,717/x
  3. Step 3: Cross multiply
    488,133.54x = 673,544.10 × 306,717
  4. Step 4: Simplify right side
    488,133.54x = 206,587,425,719.70
  5. Step 5: Solve for x
    x = 206,587,425,719.70/488,133.54
  6. Step 6: Final answer
    x = 423,219.08

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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.