Home / 430,669.71-645,932.21-131,077.71

Finding the Fourth Proportional to 430,669.71, 645,932.21 and 131,077.71

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Solution

The fourth proportional to 430,669.71, 645,932.21 and 131,077.71 is: 196,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,669.71 : 645,932.21 = 131,077.71 : x
  2. Step 2: Convert to fraction form
    430,669.71/645,932.21 = 131,077.71/x
  3. Step 3: Cross multiply
    430,669.71x = 645,932.21 × 131,077.71
  4. Step 4: Simplify right side
    430,669.71x = 84,667,314,246.65
  5. Step 5: Solve for x
    x = 84,667,314,246.65/430,669.71
  6. Step 6: Final answer
    x = 196,594.54

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1.5x scale

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.