Home / 311,760.16-430,127.52-190,775.20

Finding the Fourth Proportional to 311,760.16, 430,127.52 and 190,775.20

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Solution

The fourth proportional to 311,760.16, 430,127.52 and 190,775.20 is: 263,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,760.16 : 430,127.52 = 190,775.20 : x
  2. Step 2: Convert to fraction form
    311,760.16/430,127.52 = 190,775.20/x
  3. Step 3: Cross multiply
    311,760.16x = 430,127.52 × 190,775.20
  4. Step 4: Simplify right side
    311,760.16x = 82,057,663,653.50
  5. Step 5: Solve for x
    x = 82,057,663,653.50/311,760.16
  6. Step 6: Final answer
    x = 263,207.66

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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.