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Finding the Fourth Proportional to 307,920.40, 461,650.20 and 167,837.20

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Solution

The fourth proportional to 307,920.40, 461,650.20 and 167,837.20 is: 251,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,920.40 : 461,650.20 = 167,837.20 : x
  2. Step 2: Convert to fraction form
    307,920.40/461,650.20 = 167,837.20/x
  3. Step 3: Cross multiply
    307,920.40x = 461,650.20 × 167,837.20
  4. Step 4: Simplify right side
    307,920.40x = 77,482,076,947.44
  5. Step 5: Solve for x
    x = 77,482,076,947.44/307,920.40
  6. Step 6: Final answer
    x = 251,630.22

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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.