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Finding the Fourth Proportional to 311,633.90, 430,054.77 and 168,393.94

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Solution

The fourth proportional to 311,633.90, 430,054.77 and 168,393.94 is: 232,383.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,633.90 : 430,054.77 = 168,393.94 : x
  2. Step 2: Convert to fraction form
    311,633.90/430,054.77 = 168,393.94/x
  3. Step 3: Cross multiply
    311,633.90x = 430,054.77 × 168,393.94
  4. Step 4: Simplify right side
    311,633.90x = 72,418,614,143.85
  5. Step 5: Solve for x
    x = 72,418,614,143.85/311,633.90
  6. Step 6: Final answer
    x = 232,383.62

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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.