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Finding the Fourth Proportional to 311,499.12, 429,873.30 and 184,186.56

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Solution

The fourth proportional to 311,499.12, 429,873.30 and 184,186.56 is: 254,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,499.12 : 429,873.30 = 184,186.56 : x
  2. Step 2: Convert to fraction form
    311,499.12/429,873.30 = 184,186.56/x
  3. Step 3: Cross multiply
    311,499.12x = 429,873.30 × 184,186.56
  4. Step 4: Simplify right side
    311,499.12x = 79,176,884,362.85
  5. Step 5: Solve for x
    x = 79,176,884,362.85/311,499.12
  6. Step 6: Final answer
    x = 254,180.12

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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.