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Finding the Fourth Proportional to 384,053.40, 576,080.10 and 321,845.40

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Solution

The fourth proportional to 384,053.40, 576,080.10 and 321,845.40 is: 482,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,053.40 : 576,080.10 = 321,845.40 : x
  2. Step 2: Convert to fraction form
    384,053.40/576,080.10 = 321,845.40/x
  3. Step 3: Cross multiply
    384,053.40x = 576,080.10 × 321,845.40
  4. Step 4: Simplify right side
    384,053.40x = 185,408,730,216.54
  5. Step 5: Solve for x
    x = 185,408,730,216.54/384,053.40
  6. Step 6: Final answer
    x = 482,768.10

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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.