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Finding the Fourth Proportional to 541,830.40, 812,745.60 and 167,891.20

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Solution

The fourth proportional to 541,830.40, 812,745.60 and 167,891.20 is: 251,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,830.40 : 812,745.60 = 167,891.20 : x
  2. Step 2: Convert to fraction form
    541,830.40/812,745.60 = 167,891.20/x
  3. Step 3: Cross multiply
    541,830.40x = 812,745.60 × 167,891.20
  4. Step 4: Simplify right side
    541,830.40x = 136,452,834,078.72
  5. Step 5: Solve for x
    x = 136,452,834,078.72/541,830.40
  6. Step 6: Final answer
    x = 251,836.80

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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.