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Finding the Fourth Proportional to 255,824.01, 383,783.40 and 87,335.10

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Solution

The fourth proportional to 255,824.01, 383,783.40 and 87,335.10 is: 131,018.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,824.01 : 383,783.40 = 87,335.10 : x
  2. Step 2: Convert to fraction form
    255,824.01/383,783.40 = 87,335.10/x
  3. Step 3: Cross multiply
    255,824.01x = 383,783.40 × 87,335.10
  4. Step 4: Simplify right side
    255,824.01x = 33,517,761,617.34
  5. Step 5: Solve for x
    x = 33,517,761,617.34/255,824.01
  6. Step 6: Final answer
    x = 131,018.83

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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.