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Finding the Fourth Proportional to 542,812.35, 749,066.56 and 313,361.89

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Solution

The fourth proportional to 542,812.35, 749,066.56 and 313,361.89 is: 432,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,812.35 : 749,066.56 = 313,361.89 : x
  2. Step 2: Convert to fraction form
    542,812.35/749,066.56 = 313,361.89/x
  3. Step 3: Cross multiply
    542,812.35x = 749,066.56 × 313,361.89
  4. Step 4: Simplify right side
    542,812.35x = 234,728,912,977.40
  5. Step 5: Solve for x
    x = 234,728,912,977.40/542,812.35
  6. Step 6: Final answer
    x = 432,431.05

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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.