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Finding the Fourth Proportional to 351,598.84, 527,401.56 and 85,361.69

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Solution

The fourth proportional to 351,598.84, 527,401.56 and 85,361.69 is: 128,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,598.84 : 527,401.56 = 85,361.69 : x
  2. Step 2: Convert to fraction form
    351,598.84/527,401.56 = 85,361.69/x
  3. Step 3: Cross multiply
    351,598.84x = 527,401.56 × 85,361.69
  4. Step 4: Simplify right side
    351,598.84x = 45,019,888,470.24
  5. Step 5: Solve for x
    x = 45,019,888,470.24/351,598.84
  6. Step 6: Final answer
    x = 128,043.34

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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.