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Finding the Fourth Proportional to 351,930.33, 527,885.25 and 85,687.00

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Solution

The fourth proportional to 351,930.33, 527,885.25 and 85,687.00 is: 128,528.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,930.33 : 527,885.25 = 85,687.00 : x
  2. Step 2: Convert to fraction form
    351,930.33/527,885.25 = 85,687.00/x
  3. Step 3: Cross multiply
    351,930.33x = 527,885.25 × 85,687.00
  4. Step 4: Simplify right side
    351,930.33x = 45,232,903,942.48
  5. Step 5: Solve for x
    x = 45,232,903,942.48/351,930.33
  6. Step 6: Final answer
    x = 128,528.01

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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.