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Finding the Fourth Proportional to 351,457.80, 526,469.90 and 217,928.20

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Solution

The fourth proportional to 351,457.80, 526,469.90 and 217,928.20 is: 326,447.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,457.80 : 526,469.90 = 217,928.20 : x
  2. Step 2: Convert to fraction form
    351,457.80/526,469.90 = 217,928.20/x
  3. Step 3: Cross multiply
    351,457.80x = 526,469.90 × 217,928.20
  4. Step 4: Simplify right side
    351,457.80x = 114,732,637,661.18
  5. Step 5: Solve for x
    x = 114,732,637,661.18/351,457.80
  6. Step 6: Final answer
    x = 326,447.83

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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.