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Finding the Fourth Proportional to 278,777.52, 384,717.63 and 151,453.20

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Solution

The fourth proportional to 278,777.52, 384,717.63 and 151,453.20 is: 209,007.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,777.52 : 384,717.63 = 151,453.20 : x
  2. Step 2: Convert to fraction form
    278,777.52/384,717.63 = 151,453.20/x
  3. Step 3: Cross multiply
    278,777.52x = 384,717.63 × 151,453.20
  4. Step 4: Simplify right side
    278,777.52x = 58,266,716,159.92
  5. Step 5: Solve for x
    x = 58,266,716,159.92/278,777.52
  6. Step 6: Final answer
    x = 209,007.94

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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.