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Finding the Fourth Proportional to 278,507.54, 384,141.74 and 255,611.28

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Solution

The fourth proportional to 278,507.54, 384,141.74 and 255,611.28 is: 352,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,507.54 : 384,141.74 = 255,611.28 : x
  2. Step 2: Convert to fraction form
    278,507.54/384,141.74 = 255,611.28/x
  3. Step 3: Cross multiply
    278,507.54x = 384,141.74 × 255,611.28
  4. Step 4: Simplify right side
    278,507.54x = 98,190,961,862.83
  5. Step 5: Solve for x
    x = 98,190,961,862.83/278,507.54
  6. Step 6: Final answer
    x = 352,561.23

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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.