Home / 219,916,056.40-329,790,103.80-66,511,128.40

Finding the Fourth Proportional to 219,916,056.40, 329,790,103.80 and 66,511,128.40

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Solution

The fourth proportional to 219,916,056.40, 329,790,103.80 and 66,511,128.40 is: 99,741,293.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,916,056.40 : 329,790,103.80 = 66,511,128.40 : x
  2. Step 2: Convert to fraction form
    219,916,056.40/329,790,103.80 = 66,511,128.40/x
  3. Step 3: Cross multiply
    219,916,056.40x = 329,790,103.80 × 66,511,128.40
  4. Step 4: Simplify right side
    219,916,056.40x = 21,934,711,938,891,128
  5. Step 5: Solve for x
    x = 21,934,711,938,891,128/219,916,056.40
  6. Step 6: Final answer
    x = 99,741,293.56

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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.