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Finding the Fourth Proportional to 476,553.15, 657,647.91 and 261,697.71

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Solution

The fourth proportional to 476,553.15, 657,647.91 and 261,697.71 is: 361,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,553.15 : 657,647.91 = 261,697.71 : x
  2. Step 2: Convert to fraction form
    476,553.15/657,647.91 = 261,697.71/x
  3. Step 3: Cross multiply
    476,553.15x = 657,647.91 × 261,697.71
  4. Step 4: Simplify right side
    476,553.15x = 172,104,952,033.29
  5. Step 5: Solve for x
    x = 172,104,952,033.29/476,553.15
  6. Step 6: Final answer
    x = 361,145.35

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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.