Home / 420,090.36-579,625.03-238,788.01

Finding the Fourth Proportional to 420,090.36, 579,625.03 and 238,788.01

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Solution

The fourth proportional to 420,090.36, 579,625.03 and 238,788.01 is: 329,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,090.36 : 579,625.03 = 238,788.01 : x
  2. Step 2: Convert to fraction form
    420,090.36/579,625.03 = 238,788.01/x
  3. Step 3: Cross multiply
    420,090.36x = 579,625.03 × 238,788.01
  4. Step 4: Simplify right side
    420,090.36x = 138,407,507,459.89
  5. Step 5: Solve for x
    x = 138,407,507,459.89/420,090.36
  6. Step 6: Final answer
    x = 329,470.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.