Home / 639,128.98-959,028.81-240,045.22

Finding the Fourth Proportional to 639,128.98, 959,028.81 and 240,045.22

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Solution

The fourth proportional to 639,128.98, 959,028.81 and 240,045.22 is: 360,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,128.98 : 959,028.81 = 240,045.22 : x
  2. Step 2: Convert to fraction form
    639,128.98/959,028.81 = 240,045.22/x
  3. Step 3: Cross multiply
    639,128.98x = 959,028.81 × 240,045.22
  4. Step 4: Simplify right side
    639,128.98x = 230,210,283,331.66
  5. Step 5: Solve for x
    x = 230,210,283,331.66/639,128.98
  6. Step 6: Final answer
    x = 360,193.78

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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.