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Finding the Fourth Proportional to 248,006.80, 372,125.40 and 129,811.60

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Solution

The fourth proportional to 248,006.80, 372,125.40 and 129,811.60 is: 194,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,006.80 : 372,125.40 = 129,811.60 : x
  2. Step 2: Convert to fraction form
    248,006.80/372,125.40 = 129,811.60/x
  3. Step 3: Cross multiply
    248,006.80x = 372,125.40 × 129,811.60
  4. Step 4: Simplify right side
    248,006.80x = 48,306,193,574.64
  5. Step 5: Solve for x
    x = 48,306,193,574.64/248,006.80
  6. Step 6: Final answer
    x = 194,777.70

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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.