Home / 256,914,469.80-385,259,730.30-103,509,541.80

Finding the Fourth Proportional to 256,914,469.80, 385,259,730.30 and 103,509,541.80

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Solution

The fourth proportional to 256,914,469.80, 385,259,730.30 and 103,509,541.80 is: 155,219,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,914,469.80 : 385,259,730.30 = 103,509,541.80 : x
  2. Step 2: Convert to fraction form
    256,914,469.80/385,259,730.30 = 103,509,541.80/x
  3. Step 3: Cross multiply
    256,914,469.80x = 385,259,730.30 × 103,509,541.80
  4. Step 4: Simplify right side
    256,914,469.80x = 39,878,058,157,344,576
  5. Step 5: Solve for x
    x = 39,878,058,157,344,576/256,914,469.80
  6. Step 6: Final answer
    x = 155,219,198.78

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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.