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Finding the Fourth Proportional to 245,893.60, 368,840.40 and 219,455.20

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Solution

The fourth proportional to 245,893.60, 368,840.40 and 219,455.20 is: 329,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,893.60 : 368,840.40 = 219,455.20 : x
  2. Step 2: Convert to fraction form
    245,893.60/368,840.40 = 219,455.20/x
  3. Step 3: Cross multiply
    245,893.60x = 368,840.40 × 219,455.20
  4. Step 4: Simplify right side
    245,893.60x = 80,943,943,750.08
  5. Step 5: Solve for x
    x = 80,943,943,750.08/245,893.60
  6. Step 6: Final answer
    x = 329,182.80

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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.