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Finding the Fourth Proportional to 447,813.90, 617,982.21 and 243,861.57

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Solution

The fourth proportional to 447,813.90, 617,982.21 and 243,861.57 is: 336,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,813.90 : 617,982.21 = 243,861.57 : x
  2. Step 2: Convert to fraction form
    447,813.90/617,982.21 = 243,861.57/x
  3. Step 3: Cross multiply
    447,813.90x = 617,982.21 × 243,861.57
  4. Step 4: Simplify right side
    447,813.90x = 150,702,111,962.67
  5. Step 5: Solve for x
    x = 150,702,111,962.67/447,813.90
  6. Step 6: Final answer
    x = 336,528.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.