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Finding the Fourth Proportional to 248,485.20, 372,727.80 and 90,718.80

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Solution

The fourth proportional to 248,485.20, 372,727.80 and 90,718.80 is: 136,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,485.20 : 372,727.80 = 90,718.80 : x
  2. Step 2: Convert to fraction form
    248,485.20/372,727.80 = 90,718.80/x
  3. Step 3: Cross multiply
    248,485.20x = 372,727.80 × 90,718.80
  4. Step 4: Simplify right side
    248,485.20x = 33,813,418,742.64
  5. Step 5: Solve for x
    x = 33,813,418,742.64/248,485.20
  6. Step 6: Final answer
    x = 136,078.20

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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.