Home / 215,776.56-297,910-139,329.84

Finding the Fourth Proportional to 215,776.56, 297,910 and 139,329.84

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Solution

The fourth proportional to 215,776.56, 297,910 and 139,329.84 is: 192,364.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,776.56 : 297,910 = 139,329.84 : x
  2. Step 2: Convert to fraction form
    215,776.56/297,910 = 139,329.84/x
  3. Step 3: Cross multiply
    215,776.56x = 297,910 × 139,329.84
  4. Step 4: Simplify right side
    215,776.56x = 41,507,752,634.40
  5. Step 5: Solve for x
    x = 41,507,752,634.40/215,776.56
  6. Step 6: Final answer
    x = 192,364.51

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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.