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Finding the Fourth Proportional to 248,368.80, 372,559.60 and 90,714.72

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Solution

The fourth proportional to 248,368.80, 372,559.60 and 90,714.72 is: 136,074.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,368.80 : 372,559.60 = 90,714.72 : x
  2. Step 2: Convert to fraction form
    248,368.80/372,559.60 = 90,714.72/x
  3. Step 3: Cross multiply
    248,368.80x = 372,559.60 × 90,714.72
  4. Step 4: Simplify right side
    248,368.80x = 33,796,639,797.31
  5. Step 5: Solve for x
    x = 33,796,639,797.31/248,368.80
  6. Step 6: Final answer
    x = 136,074.42

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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.