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Finding the Fourth Proportional to 255,819.51, 383,776.65 and 87,330.60

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Solution

The fourth proportional to 255,819.51, 383,776.65 and 87,330.60 is: 131,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,819.51 : 383,776.65 = 87,330.60 : x
  2. Step 2: Convert to fraction form
    255,819.51/383,776.65 = 87,330.60/x
  3. Step 3: Cross multiply
    255,819.51x = 383,776.65 × 87,330.60
  4. Step 4: Simplify right side
    255,819.51x = 33,515,445,110.49
  5. Step 5: Solve for x
    x = 33,515,445,110.49/255,819.51
  6. Step 6: Final answer
    x = 131,012.08

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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.