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Finding the Fourth Proportional to 248,779.80, 373,266.90 and 91,020.60

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Solution

The fourth proportional to 248,779.80, 373,266.90 and 91,020.60 is: 136,566.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,779.80 : 373,266.90 = 91,020.60 : x
  2. Step 2: Convert to fraction form
    248,779.80/373,266.90 = 91,020.60/x
  3. Step 3: Cross multiply
    248,779.80x = 373,266.90 × 91,020.60
  4. Step 4: Simplify right side
    248,779.80x = 33,974,977,198.14
  5. Step 5: Solve for x
    x = 33,974,977,198.14/248,779.80
  6. Step 6: Final answer
    x = 136,566.46

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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.