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Finding the Fourth Proportional to 447,655.21, 617,749.13 and 243,702.27

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Solution

The fourth proportional to 447,655.21, 617,749.13 and 243,702.27 is: 336,300.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,655.21 : 617,749.13 = 243,702.27 : x
  2. Step 2: Convert to fraction form
    447,655.21/617,749.13 = 243,702.27/x
  3. Step 3: Cross multiply
    447,655.21x = 617,749.13 × 243,702.27
  4. Step 4: Simplify right side
    447,655.21x = 150,546,865,880.78
  5. Step 5: Solve for x
    x = 150,546,865,880.78/447,655.21
  6. Step 6: Final answer
    x = 336,300.94

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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.