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Finding the Fourth Proportional to 488,991.63, 675,029.52 and 307,969.59

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Solution

The fourth proportional to 488,991.63, 675,029.52 and 307,969.59 is: 425,137.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,991.63 : 675,029.52 = 307,969.59 : x
  2. Step 2: Convert to fraction form
    488,991.63/675,029.52 = 307,969.59/x
  3. Step 3: Cross multiply
    488,991.63x = 675,029.52 × 307,969.59
  4. Step 4: Simplify right side
    488,991.63x = 207,888,564,512.30
  5. Step 5: Solve for x
    x = 207,888,564,512.30/488,991.63
  6. Step 6: Final answer
    x = 425,137.27

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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.