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Finding the Fourth Proportional to 248,139, 371,912.04 and 90,281.52

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Solution

The fourth proportional to 248,139, 371,912.04 and 90,281.52 is: 135,314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,139 : 371,912.04 = 90,281.52 : x
  2. Step 2: Convert to fraction form
    248,139/371,912.04 = 90,281.52/x
  3. Step 3: Cross multiply
    248,139x = 371,912.04 × 90,281.52
  4. Step 4: Simplify right side
    248,139x = 33,576,784,277.50
  5. Step 5: Solve for x
    x = 33,576,784,277.50/248,139
  6. Step 6: Final answer
    x = 135,314.42

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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.