Home / 481,029.69-721,323.68-139,395.45

Finding the Fourth Proportional to 481,029.69, 721,323.68 and 139,395.45

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Solution

The fourth proportional to 481,029.69, 721,323.68 and 139,395.45 is: 209,029.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,029.69 : 721,323.68 = 139,395.45 : x
  2. Step 2: Convert to fraction form
    481,029.69/721,323.68 = 139,395.45/x
  3. Step 3: Cross multiply
    481,029.69x = 721,323.68 × 139,395.45
  4. Step 4: Simplify right side
    481,029.69x = 100,549,238,272.28
  5. Step 5: Solve for x
    x = 100,549,238,272.28/481,029.69
  6. Step 6: Final answer
    x = 209,029.17

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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.