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Finding the Fourth Proportional to 248,012.64, 371,800.08 and 90,213.48

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Solution

The fourth proportional to 248,012.64, 371,800.08 and 90,213.48 is: 135,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,012.64 : 371,800.08 = 90,213.48 : x
  2. Step 2: Convert to fraction form
    248,012.64/371,800.08 = 90,213.48/x
  3. Step 3: Cross multiply
    248,012.64x = 371,800.08 × 90,213.48
  4. Step 4: Simplify right side
    248,012.64x = 33,541,379,081.08
  5. Step 5: Solve for x
    x = 33,541,379,081.08/248,012.64
  6. Step 6: Final answer
    x = 135,240.60

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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.