Home / 278,462.84-384,279.07-151,138.47

Finding the Fourth Proportional to 278,462.84, 384,279.07 and 151,138.47

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Solution

The fourth proportional to 278,462.84, 384,279.07 and 151,138.47 is: 208,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,462.84 : 384,279.07 = 151,138.47 : x
  2. Step 2: Convert to fraction form
    278,462.84/384,279.07 = 151,138.47/x
  3. Step 3: Cross multiply
    278,462.84x = 384,279.07 × 151,138.47
  4. Step 4: Simplify right side
    278,462.84x = 58,079,350,692.82
  5. Step 5: Solve for x
    x = 58,079,350,692.82/278,462.84
  6. Step 6: Final answer
    x = 208,571.28

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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.