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Finding the Fourth Proportional to 498,708.68, 749,170.22 and 309,309.03

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Solution

The fourth proportional to 498,708.68, 749,170.22 and 309,309.03 is: 464,650.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,708.68 : 749,170.22 = 309,309.03 : x
  2. Step 2: Convert to fraction form
    498,708.68/749,170.22 = 309,309.03/x
  3. Step 3: Cross multiply
    498,708.68x = 749,170.22 × 309,309.03
  4. Step 4: Simplify right side
    498,708.68x = 231,725,112,506.54
  5. Step 5: Solve for x
    x = 231,725,112,506.54/498,708.68
  6. Step 6: Final answer
    x = 464,650.25

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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.