Home / 420,258.75-579,973.26-238,987.02

Finding the Fourth Proportional to 420,258.75, 579,973.26 and 238,987.02

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Solution

The fourth proportional to 420,258.75, 579,973.26 and 238,987.02 is: 329,811.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,258.75 : 579,973.26 = 238,987.02 : x
  2. Step 2: Convert to fraction form
    420,258.75/579,973.26 = 238,987.02/x
  3. Step 3: Cross multiply
    420,258.75x = 579,973.26 × 238,987.02
  4. Step 4: Simplify right side
    420,258.75x = 138,606,081,087.09
  5. Step 5: Solve for x
    x = 138,606,081,087.09/420,258.75
  6. Step 6: Final answer
    x = 329,811.29

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1.5x scale

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.