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Finding the Fourth Proportional to 351,942.03, 527,907.56 and 85,702.10

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Solution

The fourth proportional to 351,942.03, 527,907.56 and 85,702.10 is: 128,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,942.03 : 527,907.56 = 85,702.10 : x
  2. Step 2: Convert to fraction form
    351,942.03/527,907.56 = 85,702.10/x
  3. Step 3: Cross multiply
    351,942.03x = 527,907.56 × 85,702.10
  4. Step 4: Simplify right side
    351,942.03x = 45,242,783,429.83
  5. Step 5: Solve for x
    x = 45,242,783,429.83/351,942.03
  6. Step 6: Final answer
    x = 128,551.81

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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.