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Finding the Fourth Proportional to 255,793.47, 383,729.61 and 87,274.51

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Solution

The fourth proportional to 255,793.47, 383,729.61 and 87,274.51 is: 130,925.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,793.47 : 383,729.61 = 87,274.51 : x
  2. Step 2: Convert to fraction form
    255,793.47/383,729.61 = 87,274.51/x
  3. Step 3: Cross multiply
    255,793.47x = 383,729.61 × 87,274.51
  4. Step 4: Simplify right side
    255,793.47x = 33,489,814,530.28
  5. Step 5: Solve for x
    x = 33,489,814,530.28/255,793.47
  6. Step 6: Final answer
    x = 130,925.21

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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.