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Finding the Fourth Proportional to 245,576.25, 368,425.68 and 85,654.48

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Solution

The fourth proportional to 245,576.25, 368,425.68 and 85,654.48 is: 128,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,576.25 : 368,425.68 = 85,654.48 : x
  2. Step 2: Convert to fraction form
    245,576.25/368,425.68 = 85,654.48/x
  3. Step 3: Cross multiply
    245,576.25x = 368,425.68 × 85,654.48
  4. Step 4: Simplify right side
    245,576.25x = 31,557,309,608.03
  5. Step 5: Solve for x
    x = 31,557,309,608.03/245,576.25
  6. Step 6: Final answer
    x = 128,503.10

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1.5x scale

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.