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Finding the Fourth Proportional to 447,751.12, 617,911.64 and 243,809.92

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Solution

The fourth proportional to 447,751.12, 617,911.64 and 243,809.92 is: 336,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,751.12 : 617,911.64 = 243,809.92 : x
  2. Step 2: Convert to fraction form
    447,751.12/617,911.64 = 243,809.92/x
  3. Step 3: Cross multiply
    447,751.12x = 617,911.64 × 243,809.92
  4. Step 4: Simplify right side
    447,751.12x = 150,652,987,515.47
  5. Step 5: Solve for x
    x = 150,652,987,515.47/447,751.12
  6. Step 6: Final answer
    x = 336,465.91

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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.