Home / 278,981.20-384,989.52-151,660

Finding the Fourth Proportional to 278,981.20, 384,989.52 and 151,660

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Solution

The fourth proportional to 278,981.20, 384,989.52 and 151,660 is: 209,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,981.20 : 384,989.52 = 151,660 : x
  2. Step 2: Convert to fraction form
    278,981.20/384,989.52 = 151,660/x
  3. Step 3: Cross multiply
    278,981.20x = 384,989.52 × 151,660
  4. Step 4: Simplify right side
    278,981.20x = 58,387,510,603.20
  5. Step 5: Solve for x
    x = 58,387,510,603.20/278,981.20
  6. Step 6: Final answer
    x = 209,288.33

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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.