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Finding the Fourth Proportional to 488,014.88, 673,364.81 and 306,621.72

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Solution

The fourth proportional to 488,014.88, 673,364.81 and 306,621.72 is: 423,077.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,014.88 : 673,364.81 = 306,621.72 : x
  2. Step 2: Convert to fraction form
    488,014.88/673,364.81 = 306,621.72/x
  3. Step 3: Cross multiply
    488,014.88x = 673,364.81 × 306,621.72
  4. Step 4: Simplify right side
    488,014.88x = 206,468,276,996.23
  5. Step 5: Solve for x
    x = 206,468,276,996.23/488,014.88
  6. Step 6: Final answer
    x = 423,077.84

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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.