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Finding the Fourth Proportional to 311,340.84, 429,660.90 and 184,125.48

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Solution

The fourth proportional to 311,340.84, 429,660.90 and 184,125.48 is: 254,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,340.84 : 429,660.90 = 184,125.48 : x
  2. Step 2: Convert to fraction form
    311,340.84/429,660.90 = 184,125.48/x
  3. Step 3: Cross multiply
    311,340.84x = 429,660.90 × 184,125.48
  4. Step 4: Simplify right side
    311,340.84x = 79,111,519,449.73
  5. Step 5: Solve for x
    x = 79,111,519,449.73/311,340.84
  6. Step 6: Final answer
    x = 254,099.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.