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Finding the Fourth Proportional to 424,455.33, 636,705.68 and 108,914.97

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Solution

The fourth proportional to 424,455.33, 636,705.68 and 108,914.97 is: 163,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,455.33 : 636,705.68 = 108,914.97 : x
  2. Step 2: Convert to fraction form
    424,455.33/636,705.68 = 108,914.97/x
  3. Step 3: Cross multiply
    424,455.33x = 636,705.68 × 108,914.97
  4. Step 4: Simplify right side
    424,455.33x = 69,346,779,491.45
  5. Step 5: Solve for x
    x = 69,346,779,491.45/424,455.33
  6. Step 6: Final answer
    x = 163,378.27

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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.