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Finding the Fourth Proportional to 311,624.88, 430,130.56 and 184,344.72

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Solution

The fourth proportional to 311,624.88, 430,130.56 and 184,344.72 is: 254,447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,624.88 : 430,130.56 = 184,344.72 : x
  2. Step 2: Convert to fraction form
    311,624.88/430,130.56 = 184,344.72/x
  3. Step 3: Cross multiply
    311,624.88x = 430,130.56 × 184,344.72
  4. Step 4: Simplify right side
    311,624.88x = 79,292,297,646.64
  5. Step 5: Solve for x
    x = 79,292,297,646.64/311,624.88
  6. Step 6: Final answer
    x = 254,447.90

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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.