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Finding the Fourth Proportional to 476,653.96, 657,790.38 and 261,813.88

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Solution

The fourth proportional to 476,653.96, 657,790.38 and 261,813.88 is: 361,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,653.96 : 657,790.38 = 261,813.88 : x
  2. Step 2: Convert to fraction form
    476,653.96/657,790.38 = 261,813.88/x
  3. Step 3: Cross multiply
    476,653.96x = 657,790.38 × 261,813.88
  4. Step 4: Simplify right side
    476,653.96x = 172,218,651,614.47
  5. Step 5: Solve for x
    x = 172,218,651,614.47/476,653.96
  6. Step 6: Final answer
    x = 361,307.50

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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.