Home / 245,821.85-339,240.47-138,395.69

Finding the Fourth Proportional to 245,821.85, 339,240.47 and 138,395.69

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Solution

The fourth proportional to 245,821.85, 339,240.47 and 138,395.69 is: 190,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,821.85 : 339,240.47 = 138,395.69 : x
  2. Step 2: Convert to fraction form
    245,821.85/339,240.47 = 138,395.69/x
  3. Step 3: Cross multiply
    245,821.85x = 339,240.47 × 138,395.69
  4. Step 4: Simplify right side
    245,821.85x = 46,949,416,533.39
  5. Step 5: Solve for x
    x = 46,949,416,533.39/245,821.85
  6. Step 6: Final answer
    x = 190,989.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.