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Finding the Fourth Proportional to 526,311.67, 789,165.31 and 206,088.61

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Solution

The fourth proportional to 526,311.67, 789,165.31 and 206,088.61 is: 309,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,311.67 : 789,165.31 = 206,088.61 : x
  2. Step 2: Convert to fraction form
    526,311.67/789,165.31 = 206,088.61/x
  3. Step 3: Cross multiply
    526,311.67x = 789,165.31 × 206,088.61
  4. Step 4: Simplify right side
    526,311.67x = 162,637,983,255.81
  5. Step 5: Solve for x
    x = 162,637,983,255.81/526,311.67
  6. Step 6: Final answer
    x = 309,014.59

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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.