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Finding the Fourth Proportional to 255,801.76, 383,737.68 and 87,276.88

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Solution

The fourth proportional to 255,801.76, 383,737.68 and 87,276.88 is: 130,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,801.76 : 383,737.68 = 87,276.88 : x
  2. Step 2: Convert to fraction form
    255,801.76/383,737.68 = 87,276.88/x
  3. Step 3: Cross multiply
    255,801.76x = 383,737.68 × 87,276.88
  4. Step 4: Simplify right side
    255,801.76x = 33,491,427,448.84
  5. Step 5: Solve for x
    x = 33,491,427,448.84/255,801.76
  6. Step 6: Final answer
    x = 130,927.28

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1.5x scale

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.