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Finding the Fourth Proportional to 636,304.54, 955,148.43 and 257,486.05

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Solution

The fourth proportional to 636,304.54, 955,148.43 and 257,486.05 is: 386,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,304.54 : 955,148.43 = 257,486.05 : x
  2. Step 2: Convert to fraction form
    636,304.54/955,148.43 = 257,486.05/x
  3. Step 3: Cross multiply
    636,304.54x = 955,148.43 × 257,486.05
  4. Step 4: Simplify right side
    636,304.54x = 245,937,396,404.40
  5. Step 5: Solve for x
    x = 245,937,396,404.40/636,304.54
  6. Step 6: Final answer
    x = 386,508.94

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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.