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Finding the Fourth Proportional to 311,789.85, 430,267.32 and 168,548.64

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Solution

The fourth proportional to 311,789.85, 430,267.32 and 168,548.64 is: 232,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,789.85 : 430,267.32 = 168,548.64 : x
  2. Step 2: Convert to fraction form
    311,789.85/430,267.32 = 168,548.64/x
  3. Step 3: Cross multiply
    311,789.85x = 430,267.32 × 168,548.64
  4. Step 4: Simplify right side
    311,789.85x = 72,520,971,622.44
  5. Step 5: Solve for x
    x = 72,520,971,622.44/311,789.85
  6. Step 6: Final answer
    x = 232,595.68

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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.