Home / 405,828.07-608,825.13-139,554

Finding the Fourth Proportional to 405,828.07, 608,825.13 and 139,554

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Solution

The fourth proportional to 405,828.07, 608,825.13 and 139,554 is: 209,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,828.07 : 608,825.13 = 139,554 : x
  2. Step 2: Convert to fraction form
    405,828.07/608,825.13 = 139,554/x
  3. Step 3: Cross multiply
    405,828.07x = 608,825.13 × 139,554
  4. Step 4: Simplify right side
    405,828.07x = 84,963,982,192.02
  5. Step 5: Solve for x
    x = 84,963,982,192.02/405,828.07
  6. Step 6: Final answer
    x = 209,359.55

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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.