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Finding the Fourth Proportional to 245,418.80, 368,128.20 and 166,103.60

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Solution

The fourth proportional to 245,418.80, 368,128.20 and 166,103.60 is: 249,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,418.80 : 368,128.20 = 166,103.60 : x
  2. Step 2: Convert to fraction form
    245,418.80/368,128.20 = 166,103.60/x
  3. Step 3: Cross multiply
    245,418.80x = 368,128.20 × 166,103.60
  4. Step 4: Simplify right side
    245,418.80x = 61,147,419,281.52
  5. Step 5: Solve for x
    x = 61,147,419,281.52/245,418.80
  6. Step 6: Final answer
    x = 249,155.40

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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.