Home / 219,859,812.40-329,579,766.60-81,648,410.80

Finding the Fourth Proportional to 219,859,812.40, 329,579,766.60 and 81,648,410.80

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Solution

The fourth proportional to 219,859,812.40, 329,579,766.60 and 81,648,410.80 is: 122,394,647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,859,812.40 : 329,579,766.60 = 81,648,410.80 : x
  2. Step 2: Convert to fraction form
    219,859,812.40/329,579,766.60 = 81,648,410.80/x
  3. Step 3: Cross multiply
    219,859,812.40x = 329,579,766.60 × 81,648,410.80
  4. Step 4: Simplify right side
    219,859,812.40x = 26,909,664,174,724,920
  5. Step 5: Solve for x
    x = 26,909,664,174,724,920/219,859,812.40
  6. Step 6: Final answer
    x = 122,394,647.21

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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.