Home / 311,686.29-430,025.81-190,701.45

Finding the Fourth Proportional to 311,686.29, 430,025.81 and 190,701.45

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Solution

The fourth proportional to 311,686.29, 430,025.81 and 190,701.45 is: 263,106.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,686.29 : 430,025.81 = 190,701.45 : x
  2. Step 2: Convert to fraction form
    311,686.29/430,025.81 = 190,701.45/x
  3. Step 3: Cross multiply
    311,686.29x = 430,025.81 × 190,701.45
  4. Step 4: Simplify right side
    311,686.29x = 82,006,544,550.92
  5. Step 5: Solve for x
    x = 82,006,544,550.92/311,686.29
  6. Step 6: Final answer
    x = 263,106.04

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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.