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Finding the Fourth Proportional to 664,078.80, 995,513.40 and 243,253.20

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Solution

The fourth proportional to 664,078.80, 995,513.40 and 243,253.20 is: 364,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,078.80 : 995,513.40 = 243,253.20 : x
  2. Step 2: Convert to fraction form
    664,078.80/995,513.40 = 243,253.20/x
  3. Step 3: Cross multiply
    664,078.80x = 995,513.40 × 243,253.20
  4. Step 4: Simplify right side
    664,078.80x = 242,161,820,192.88
  5. Step 5: Solve for x
    x = 242,161,820,192.88/664,078.80
  6. Step 6: Final answer
    x = 364,658.26

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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.