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Finding the Fourth Proportional to 255,499.83, 383,309.04 and 87,021.62

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Solution

The fourth proportional to 255,499.83, 383,309.04 and 87,021.62 is: 130,552.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,499.83 : 383,309.04 = 87,021.62 : x
  2. Step 2: Convert to fraction form
    255,499.83/383,309.04 = 87,021.62/x
  3. Step 3: Cross multiply
    255,499.83x = 383,309.04 × 87,021.62
  4. Step 4: Simplify right side
    255,499.83x = 33,356,173,621.44
  5. Step 5: Solve for x
    x = 33,356,173,621.44/255,499.83
  6. Step 6: Final answer
    x = 130,552.63

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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.