Home / 330,840.60-496,260.90-120,485.40

Finding the Fourth Proportional to 330,840.60, 496,260.90 and 120,485.40

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Solution

The fourth proportional to 330,840.60, 496,260.90 and 120,485.40 is: 180,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,840.60 : 496,260.90 = 120,485.40 : x
  2. Step 2: Convert to fraction form
    330,840.60/496,260.90 = 120,485.40/x
  3. Step 3: Cross multiply
    330,840.60x = 496,260.90 × 120,485.40
  4. Step 4: Simplify right side
    330,840.60x = 59,792,193,040.86
  5. Step 5: Solve for x
    x = 59,792,193,040.86/330,840.60
  6. Step 6: Final answer
    x = 180,728.10

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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.