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Finding the Fourth Proportional to 272,015.64, 407,773.26 and 145,742.76

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Solution

The fourth proportional to 272,015.64, 407,773.26 and 145,742.76 is: 218,480.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,015.64 : 407,773.26 = 145,742.76 : x
  2. Step 2: Convert to fraction form
    272,015.64/407,773.26 = 145,742.76/x
  3. Step 3: Cross multiply
    272,015.64x = 407,773.26 × 145,742.76
  4. Step 4: Simplify right side
    272,015.64x = 59,430,000,366.60
  5. Step 5: Solve for x
    x = 59,430,000,366.60/272,015.64
  6. Step 6: Final answer
    x = 218,480.09

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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.