Home / 430,105.39-645,183.20-130,595.74

Finding the Fourth Proportional to 430,105.39, 645,183.20 and 130,595.74

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Solution

The fourth proportional to 430,105.39, 645,183.20 and 130,595.74 is: 195,901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,105.39 : 645,183.20 = 130,595.74 : x
  2. Step 2: Convert to fraction form
    430,105.39/645,183.20 = 130,595.74/x
  3. Step 3: Cross multiply
    430,105.39x = 645,183.20 × 130,595.74
  4. Step 4: Simplify right side
    430,105.39x = 84,258,176,786.59
  5. Step 5: Solve for x
    x = 84,258,176,786.59/430,105.39
  6. Step 6: Final answer
    x = 195,901.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.