Home / 412,013.32-618,297-145,772.80

Finding the Fourth Proportional to 412,013.32, 618,297 and 145,772.80

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Solution

The fourth proportional to 412,013.32, 618,297 and 145,772.80 is: 218,757.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,013.32 : 618,297 = 145,772.80 : x
  2. Step 2: Convert to fraction form
    412,013.32/618,297 = 145,772.80/x
  3. Step 3: Cross multiply
    412,013.32x = 618,297 × 145,772.80
  4. Step 4: Simplify right side
    412,013.32x = 90,130,884,921.60
  5. Step 5: Solve for x
    x = 90,130,884,921.60/412,013.32
  6. Step 6: Final answer
    x = 218,757.21

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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.