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Finding the Fourth Proportional to 424,012.81, 636,009.21 and 104,164.17

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Solution

The fourth proportional to 424,012.81, 636,009.21 and 104,164.17 is: 156,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,012.81 : 636,009.21 = 104,164.17 : x
  2. Step 2: Convert to fraction form
    424,012.81/636,009.21 = 104,164.17/x
  3. Step 3: Cross multiply
    424,012.81x = 636,009.21 × 104,164.17
  4. Step 4: Simplify right side
    424,012.81x = 66,249,371,472.01
  5. Step 5: Solve for x
    x = 66,249,371,472.01/424,012.81
  6. Step 6: Final answer
    x = 156,243.80

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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.