Home / 278,629.31-384,509.85-151,304.90

Finding the Fourth Proportional to 278,629.31, 384,509.85 and 151,304.90

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Solution

The fourth proportional to 278,629.31, 384,509.85 and 151,304.90 is: 208,801.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,629.31 : 384,509.85 = 151,304.90 : x
  2. Step 2: Convert to fraction form
    278,629.31/384,509.85 = 151,304.90/x
  3. Step 3: Cross multiply
    278,629.31x = 384,509.85 × 151,304.90
  4. Step 4: Simplify right side
    278,629.31x = 58,178,222,480.72
  5. Step 5: Solve for x
    x = 58,178,222,480.72/278,629.31
  6. Step 6: Final answer
    x = 208,801.52

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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.