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Finding the Fourth Proportional to 248,004.80, 372,122.40 and 129,809.60

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Solution

The fourth proportional to 248,004.80, 372,122.40 and 129,809.60 is: 194,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,004.80 : 372,122.40 = 129,809.60 : x
  2. Step 2: Convert to fraction form
    248,004.80/372,122.40 = 129,809.60/x
  3. Step 3: Cross multiply
    248,004.80x = 372,122.40 × 129,809.60
  4. Step 4: Simplify right side
    248,004.80x = 48,305,059,895.04
  5. Step 5: Solve for x
    x = 48,305,059,895.04/248,004.80
  6. Step 6: Final answer
    x = 194,774.70

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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.