Home / 430,574.81-645,895.22-131,080.95

Finding the Fourth Proportional to 430,574.81, 645,895.22 and 131,080.95

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Solution

The fourth proportional to 430,574.81, 645,895.22 and 131,080.95 is: 196,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,574.81 : 645,895.22 = 131,080.95 : x
  2. Step 2: Convert to fraction form
    430,574.81/645,895.22 = 131,080.95/x
  3. Step 3: Cross multiply
    430,574.81x = 645,895.22 × 131,080.95
  4. Step 4: Simplify right side
    430,574.81x = 84,664,558,382.65
  5. Step 5: Solve for x
    x = 84,664,558,382.65/430,574.81
  6. Step 6: Final answer
    x = 196,631.47

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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.