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Finding the Fourth Proportional to 259,406.96, 388,993.80 and 251,242.16

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Solution

The fourth proportional to 259,406.96, 388,993.80 and 251,242.16 is: 376,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,406.96 : 388,993.80 = 251,242.16 : x
  2. Step 2: Convert to fraction form
    259,406.96/388,993.80 = 251,242.16/x
  3. Step 3: Cross multiply
    259,406.96x = 388,993.80 × 251,242.16
  4. Step 4: Simplify right side
    259,406.96x = 97,731,642,538.61
  5. Step 5: Solve for x
    x = 97,731,642,538.61/259,406.96
  6. Step 6: Final answer
    x = 376,750.27

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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.