Home / 278,757.45-384,685.74-151,433.15

Finding the Fourth Proportional to 278,757.45, 384,685.74 and 151,433.15

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Solution

The fourth proportional to 278,757.45, 384,685.74 and 151,433.15 is: 208,977.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,757.45 : 384,685.74 = 151,433.15 : x
  2. Step 2: Convert to fraction form
    278,757.45/384,685.74 = 151,433.15/x
  3. Step 3: Cross multiply
    278,757.45x = 384,685.74 × 151,433.15
  4. Step 4: Simplify right side
    278,757.45x = 58,254,171,444.85
  5. Step 5: Solve for x
    x = 58,254,171,444.85/278,757.45
  6. Step 6: Final answer
    x = 208,977.99

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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.