Home / 278,723.73-384,639.13-151,399.33

Finding the Fourth Proportional to 278,723.73, 384,639.13 and 151,399.33

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Solution

The fourth proportional to 278,723.73, 384,639.13 and 151,399.33 is: 208,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,723.73 : 384,639.13 = 151,399.33 : x
  2. Step 2: Convert to fraction form
    278,723.73/384,639.13 = 151,399.33/x
  3. Step 3: Cross multiply
    278,723.73x = 384,639.13 × 151,399.33
  4. Step 4: Simplify right side
    278,723.73x = 58,234,105,801.43
  5. Step 5: Solve for x
    x = 58,234,105,801.43/278,723.73
  6. Step 6: Final answer
    x = 208,931.28

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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.