Home / 430,578.80-645,901.22-131,084.96

Finding the Fourth Proportional to 430,578.80, 645,901.22 and 131,084.96

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Solution

The fourth proportional to 430,578.80, 645,901.22 and 131,084.96 is: 196,637.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,578.80 : 645,901.22 = 131,084.96 : x
  2. Step 2: Convert to fraction form
    430,578.80/645,901.22 = 131,084.96/x
  3. Step 3: Cross multiply
    430,578.80x = 645,901.22 × 131,084.96
  4. Step 4: Simplify right side
    430,578.80x = 84,667,935,587.65
  5. Step 5: Solve for x
    x = 84,667,935,587.65/430,578.80
  6. Step 6: Final answer
    x = 196,637.49

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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.