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Finding the Fourth Proportional to 447,668.16, 617,783.66 and 243,721.50

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Solution

The fourth proportional to 447,668.16, 617,783.66 and 243,721.50 is: 336,336.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,668.16 : 617,783.66 = 243,721.50 : x
  2. Step 2: Convert to fraction form
    447,668.16/617,783.66 = 243,721.50/x
  3. Step 3: Cross multiply
    447,668.16x = 617,783.66 × 243,721.50
  4. Step 4: Simplify right side
    447,668.16x = 150,567,160,290.69
  5. Step 5: Solve for x
    x = 150,567,160,290.69/447,668.16
  6. Step 6: Final answer
    x = 336,336.54

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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.