Home / 430,574.94-645,895.20-131,081.12

Finding the Fourth Proportional to 430,574.94, 645,895.20 and 131,081.12

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Solution

The fourth proportional to 430,574.94, 645,895.20 and 131,081.12 is: 196,631.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,574.94 : 645,895.20 = 131,081.12 : x
  2. Step 2: Convert to fraction form
    430,574.94/645,895.20 = 131,081.12/x
  3. Step 3: Cross multiply
    430,574.94x = 645,895.20 × 131,081.12
  4. Step 4: Simplify right side
    430,574.94x = 84,664,666,218.62
  5. Step 5: Solve for x
    x = 84,664,666,218.62/430,574.94
  6. Step 6: Final answer
    x = 196,631.66

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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.