Home / 311,895.20-430,415.06-168,654.88

Finding the Fourth Proportional to 311,895.20, 430,415.06 and 168,654.88

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Solution

The fourth proportional to 311,895.20, 430,415.06 and 168,654.88 is: 232,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,895.20 : 430,415.06 = 168,654.88 : x
  2. Step 2: Convert to fraction form
    311,895.20/430,415.06 = 168,654.88/x
  3. Step 3: Cross multiply
    311,895.20x = 430,415.06 × 168,654.88
  4. Step 4: Simplify right side
    311,895.20x = 72,591,600,294.49
  5. Step 5: Solve for x
    x = 72,591,600,294.49/311,895.20
  6. Step 6: Final answer
    x = 232,743.56

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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.