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Finding the Fourth Proportional to 424,398.63, 636,598.08 and 108,855.54

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Solution

The fourth proportional to 424,398.63, 636,598.08 and 108,855.54 is: 163,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,398.63 : 636,598.08 = 108,855.54 : x
  2. Step 2: Convert to fraction form
    424,398.63/636,598.08 = 108,855.54/x
  3. Step 3: Cross multiply
    424,398.63x = 636,598.08 × 108,855.54
  4. Step 4: Simplify right side
    424,398.63x = 69,297,227,761.36
  5. Step 5: Solve for x
    x = 69,297,227,761.36/424,398.63
  6. Step 6: Final answer
    x = 163,283.34

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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.