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Finding the Fourth Proportional to 259,410, 388,611.48 and 170,393.40

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Solution

The fourth proportional to 259,410, 388,611.48 and 170,393.40 is: 255,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,410 : 388,611.48 = 170,393.40 : x
  2. Step 2: Convert to fraction form
    259,410/388,611.48 = 170,393.40/x
  3. Step 3: Cross multiply
    259,410x = 388,611.48 × 170,393.40
  4. Step 4: Simplify right side
    259,410x = 66,216,831,356.23
  5. Step 5: Solve for x
    x = 66,216,831,356.23/259,410
  6. Step 6: Final answer
    x = 255,259.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.