Home / 311,961.46-430,506.81-168,721.50

Finding the Fourth Proportional to 311,961.46, 430,506.81 and 168,721.50

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Solution

The fourth proportional to 311,961.46, 430,506.81 and 168,721.50 is: 232,835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,961.46 : 430,506.81 = 168,721.50 : x
  2. Step 2: Convert to fraction form
    311,961.46/430,506.81 = 168,721.50/x
  3. Step 3: Cross multiply
    311,961.46x = 430,506.81 × 168,721.50
  4. Step 4: Simplify right side
    311,961.46x = 72,635,754,743.42
  5. Step 5: Solve for x
    x = 72,635,754,743.42/311,961.46
  6. Step 6: Final answer
    x = 232,835.67

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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.