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Finding the Fourth Proportional to 636,930, 955,390.68 and 163,615.68

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Solution

The fourth proportional to 636,930, 955,390.68 and 163,615.68 is: 245,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,930 : 955,390.68 = 163,615.68 : x
  2. Step 2: Convert to fraction form
    636,930/955,390.68 = 163,615.68/x
  3. Step 3: Cross multiply
    636,930x = 955,390.68 × 163,615.68
  4. Step 4: Simplify right side
    636,930x = 156,316,895,773.86
  5. Step 5: Solve for x
    x = 156,316,895,773.86/636,930
  6. Step 6: Final answer
    x = 245,422.41

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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.