Home / 311,890,758.12-430,392,194.46-170,734,671.72

Finding the Fourth Proportional to 311,890,758.12, 430,392,194.46 and 170,734,671.72

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Solution

The fourth proportional to 311,890,758.12, 430,392,194.46 and 170,734,671.72 is: 235,604,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,890,758.12 : 430,392,194.46 = 170,734,671.72 : x
  2. Step 2: Convert to fraction form
    311,890,758.12/430,392,194.46 = 170,734,671.72/x
  3. Step 3: Cross multiply
    311,890,758.12x = 430,392,194.46 × 170,734,671.72
  4. Step 4: Simplify right side
    311,890,758.12x = 73,482,870,031,978,496
  5. Step 5: Solve for x
    x = 73,482,870,031,978,496/311,890,758.12
  6. Step 6: Final answer
    x = 235,604,512.54

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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.