Home / 215,078,128.60-322,019,996.10-209,106,160.60

Finding the Fourth Proportional to 215,078,128.60, 322,019,996.10 and 209,106,160.60

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Solution

The fourth proportional to 215,078,128.60, 322,019,996.10 and 209,106,160.60 is: 313,078,626.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,078,128.60 : 322,019,996.10 = 209,106,160.60 : x
  2. Step 2: Convert to fraction form
    215,078,128.60/322,019,996.10 = 209,106,160.60/x
  3. Step 3: Cross multiply
    215,078,128.60x = 322,019,996.10 × 209,106,160.60
  4. Step 4: Simplify right side
    215,078,128.60x = 67,336,365,020,897,976
  5. Step 5: Solve for x
    x = 67,336,365,020,897,976/215,078,128.60
  6. Step 6: Final answer
    x = 313,078,626.17

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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.