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Finding the Fourth Proportional to 278,843.54, 384,807.58 and 151,521.26

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Solution

The fourth proportional to 278,843.54, 384,807.58 and 151,521.26 is: 209,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,843.54 : 384,807.58 = 151,521.26 : x
  2. Step 2: Convert to fraction form
    278,843.54/384,807.58 = 151,521.26/x
  3. Step 3: Cross multiply
    278,843.54x = 384,807.58 × 151,521.26
  4. Step 4: Simplify right side
    278,843.54x = 58,306,527,076.31
  5. Step 5: Solve for x
    x = 58,306,527,076.31/278,843.54
  6. Step 6: Final answer
    x = 209,101.23

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1.5x scale

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.