Home / 339,724.17-509,647.55-139,935.51

Finding the Fourth Proportional to 339,724.17, 509,647.55 and 139,935.51

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Solution

The fourth proportional to 339,724.17, 509,647.55 and 139,935.51 is: 209,928.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,724.17 : 509,647.55 = 139,935.51 : x
  2. Step 2: Convert to fraction form
    339,724.17/509,647.55 = 139,935.51/x
  3. Step 3: Cross multiply
    339,724.17x = 509,647.55 × 139,935.51
  4. Step 4: Simplify right side
    339,724.17x = 71,317,789,129.82
  5. Step 5: Solve for x
    x = 71,317,789,129.82/339,724.17
  6. Step 6: Final answer
    x = 209,928.51

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1.5x scale

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.