Home / 285,975.37-428,998.81-86,295.43

Finding the Fourth Proportional to 285,975.37, 428,998.81 and 86,295.43

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Solution

The fourth proportional to 285,975.37, 428,998.81 and 86,295.43 is: 129,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,975.37 : 428,998.81 = 86,295.43 : x
  2. Step 2: Convert to fraction form
    285,975.37/428,998.81 = 86,295.43/x
  3. Step 3: Cross multiply
    285,975.37x = 428,998.81 × 86,295.43
  4. Step 4: Simplify right side
    285,975.37x = 37,020,636,562.70
  5. Step 5: Solve for x
    x = 37,020,636,562.70/285,975.37
  6. Step 6: Final answer
    x = 129,453.93

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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.