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Finding the Fourth Proportional to 264,677.60, 396,931.08 and 87,142.34

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Solution

The fourth proportional to 264,677.60, 396,931.08 and 87,142.34 is: 130,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,677.60 : 396,931.08 = 87,142.34 : x
  2. Step 2: Convert to fraction form
    264,677.60/396,931.08 = 87,142.34/x
  3. Step 3: Cross multiply
    264,677.60x = 396,931.08 × 87,142.34
  4. Step 4: Simplify right side
    264,677.60x = 34,589,503,129.93
  5. Step 5: Solve for x
    x = 34,589,503,129.93/264,677.60
  6. Step 6: Final answer
    x = 130,685.42

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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.