Home / 445,818,517.30-668,160,905.55-215,291,221.30

Finding the Fourth Proportional to 445,818,517.30, 668,160,905.55 and 215,291,221.30

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Solution

The fourth proportional to 445,818,517.30, 668,160,905.55 and 215,291,221.30 is: 322,663,083.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,818,517.30 : 668,160,905.55 = 215,291,221.30 : x
  2. Step 2: Convert to fraction form
    445,818,517.30/668,160,905.55 = 215,291,221.30/x
  3. Step 3: Cross multiply
    445,818,517.30x = 668,160,905.55 × 215,291,221.30
  4. Step 4: Simplify right side
    445,818,517.30x = 143,849,177,380,773,440
  5. Step 5: Solve for x
    x = 143,849,177,380,773,440/445,818,517.30
  6. Step 6: Final answer
    x = 322,663,083.29

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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.