Home / 219,936,440.40-329,820,679.80-66,531,512.40

Finding the Fourth Proportional to 219,936,440.40, 329,820,679.80 and 66,531,512.40

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Solution

The fourth proportional to 219,936,440.40, 329,820,679.80 and 66,531,512.40 is: 99,771,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,936,440.40 : 329,820,679.80 = 66,531,512.40 : x
  2. Step 2: Convert to fraction form
    219,936,440.40/329,820,679.80 = 66,531,512.40/x
  3. Step 3: Cross multiply
    219,936,440.40x = 329,820,679.80 × 66,531,512.40
  4. Step 4: Simplify right side
    219,936,440.40x = 21,943,468,647,890,128
  5. Step 5: Solve for x
    x = 21,943,468,647,890,128/219,936,440.40
  6. Step 6: Final answer
    x = 99,771,864.13

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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.