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Finding the Fourth Proportional to 374,476.80, 561,715.20 and 327,820.80

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Solution

The fourth proportional to 374,476.80, 561,715.20 and 327,820.80 is: 491,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,476.80 : 561,715.20 = 327,820.80 : x
  2. Step 2: Convert to fraction form
    374,476.80/561,715.20 = 327,820.80/x
  3. Step 3: Cross multiply
    374,476.80x = 561,715.20 × 327,820.80
  4. Step 4: Simplify right side
    374,476.80x = 184,141,926,236.16
  5. Step 5: Solve for x
    x = 184,141,926,236.16/374,476.80
  6. Step 6: Final answer
    x = 491,731.20

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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.