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Finding the Fourth Proportional to 424,486.70, 636,648.75 and 164,824.28

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Solution

The fourth proportional to 424,486.70, 636,648.75 and 164,824.28 is: 247,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,486.70 : 636,648.75 = 164,824.28 : x
  2. Step 2: Convert to fraction form
    424,486.70/636,648.75 = 164,824.28/x
  3. Step 3: Cross multiply
    424,486.70x = 636,648.75 × 164,824.28
  4. Step 4: Simplify right side
    424,486.70x = 104,935,171,831.65
  5. Step 5: Solve for x
    x = 104,935,171,831.65/424,486.70
  6. Step 6: Final answer
    x = 247,204.85

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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.