Home / 405,285.48-607,940.50-139,042.14

Finding the Fourth Proportional to 405,285.48, 607,940.50 and 139,042.14

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Solution

The fourth proportional to 405,285.48, 607,940.50 and 139,042.14 is: 208,567.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,285.48 : 607,940.50 = 139,042.14 : x
  2. Step 2: Convert to fraction form
    405,285.48/607,940.50 = 139,042.14/x
  3. Step 3: Cross multiply
    405,285.48x = 607,940.50 × 139,042.14
  4. Step 4: Simplify right side
    405,285.48x = 84,529,348,112.67
  5. Step 5: Solve for x
    x = 84,529,348,112.67/405,285.48
  6. Step 6: Final answer
    x = 208,567.42

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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.