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Finding the Fourth Proportional to 301,090.18, 451,591.30 and 87,800.78

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Solution

The fourth proportional to 301,090.18, 451,591.30 and 87,800.78 is: 131,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,090.18 : 451,591.30 = 87,800.78 : x
  2. Step 2: Convert to fraction form
    301,090.18/451,591.30 = 87,800.78/x
  3. Step 3: Cross multiply
    301,090.18x = 451,591.30 × 87,800.78
  4. Step 4: Simplify right side
    301,090.18x = 39,650,068,381.21
  5. Step 5: Solve for x
    x = 39,650,068,381.21/301,090.18
  6. Step 6: Final answer
    x = 131,688.35

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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.