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Finding the Fourth Proportional to 254,535.60, 381,803.40 and 129,860.40

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Solution

The fourth proportional to 254,535.60, 381,803.40 and 129,860.40 is: 194,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,535.60 : 381,803.40 = 129,860.40 : x
  2. Step 2: Convert to fraction form
    254,535.60/381,803.40 = 129,860.40/x
  3. Step 3: Cross multiply
    254,535.60x = 381,803.40 × 129,860.40
  4. Step 4: Simplify right side
    254,535.60x = 49,581,142,245.36
  5. Step 5: Solve for x
    x = 49,581,142,245.36/254,535.60
  6. Step 6: Final answer
    x = 194,790.60

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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.