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Finding the Fourth Proportional to 424,485.70, 636,647.25 and 164,823.28

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Solution

The fourth proportional to 424,485.70, 636,647.25 and 164,823.28 is: 247,203.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,485.70 : 636,647.25 = 164,823.28 : x
  2. Step 2: Convert to fraction form
    424,485.70/636,647.25 = 164,823.28/x
  3. Step 3: Cross multiply
    424,485.70x = 636,647.25 × 164,823.28
  4. Step 4: Simplify right side
    424,485.70x = 104,934,287,947.98
  5. Step 5: Solve for x
    x = 104,934,287,947.98/424,485.70
  6. Step 6: Final answer
    x = 247,203.35

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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.