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Finding the Fourth Proportional to 255,980.04, 384,015.64 and 87,519.10

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Solution

The fourth proportional to 255,980.04, 384,015.64 and 87,519.10 is: 131,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,980.04 : 384,015.64 = 87,519.10 : x
  2. Step 2: Convert to fraction form
    255,980.04/384,015.64 = 87,519.10/x
  3. Step 3: Cross multiply
    255,980.04x = 384,015.64 × 87,519.10
  4. Step 4: Simplify right side
    255,980.04x = 33,608,703,198.72
  5. Step 5: Solve for x
    x = 33,608,703,198.72/255,980.04
  6. Step 6: Final answer
    x = 131,294.23

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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.