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Finding the Fourth Proportional to 330,447.64, 456,040.30 and 187,208.86

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Solution

The fourth proportional to 330,447.64, 456,040.30 and 187,208.86 is: 258,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,447.64 : 456,040.30 = 187,208.86 : x
  2. Step 2: Convert to fraction form
    330,447.64/456,040.30 = 187,208.86/x
  3. Step 3: Cross multiply
    330,447.64x = 456,040.30 × 187,208.86
  4. Step 4: Simplify right side
    330,447.64x = 85,374,784,677.06
  5. Step 5: Solve for x
    x = 85,374,784,677.06/330,447.64
  6. Step 6: Final answer
    x = 258,361.01

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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.