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Finding the Fourth Proportional to 318,870, 440,040.60 and 184,811.76

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Solution

The fourth proportional to 318,870, 440,040.60 and 184,811.76 is: 255,040.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870 : 440,040.60 = 184,811.76 : x
  2. Step 2: Convert to fraction form
    318,870/440,040.60 = 184,811.76/x
  3. Step 3: Cross multiply
    318,870x = 440,040.60 × 184,811.76
  4. Step 4: Simplify right side
    318,870x = 81,324,677,757.46
  5. Step 5: Solve for x
    x = 81,324,677,757.46/318,870
  6. Step 6: Final answer
    x = 255,040.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.