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Finding the Fourth Proportional to 636,971.76, 955,458.36 and 163,661.04

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Solution

The fourth proportional to 636,971.76, 955,458.36 and 163,661.04 is: 245,491.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,971.76 : 955,458.36 = 163,661.04 : x
  2. Step 2: Convert to fraction form
    636,971.76/955,458.36 = 163,661.04/x
  3. Step 3: Cross multiply
    636,971.76x = 955,458.36 × 163,661.04
  4. Step 4: Simplify right side
    636,971.76x = 156,371,308,874.29
  5. Step 5: Solve for x
    x = 156,371,308,874.29/636,971.76
  6. Step 6: Final answer
    x = 245,491.74

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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.