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Finding the Fourth Proportional to 351,450.25, 527,173.65 and 85,210.81

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Solution

The fourth proportional to 351,450.25, 527,173.65 and 85,210.81 is: 127,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,450.25 : 527,173.65 = 85,210.81 : x
  2. Step 2: Convert to fraction form
    351,450.25/527,173.65 = 85,210.81/x
  3. Step 3: Cross multiply
    351,450.25x = 527,173.65 × 85,210.81
  4. Step 4: Simplify right side
    351,450.25x = 44,920,892,409.22
  5. Step 5: Solve for x
    x = 44,920,892,409.22/351,450.25
  6. Step 6: Final answer
    x = 127,815.79

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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.