Home / 401,387,513.51-553,918,546.21-225,179,291.12

Finding the Fourth Proportional to 401,387,513.51, 553,918,546.21 and 225,179,291.12

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Solution

The fourth proportional to 401,387,513.51, 553,918,546.21 and 225,179,291.12 is: 310,749,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,387,513.51 : 553,918,546.21 = 225,179,291.12 : x
  2. Step 2: Convert to fraction form
    401,387,513.51/553,918,546.21 = 225,179,291.12/x
  3. Step 3: Cross multiply
    401,387,513.51x = 553,918,546.21 × 225,179,291.12
  4. Step 4: Simplify right side
    401,387,513.51x = 124,730,985,571,727,552
  5. Step 5: Solve for x
    x = 124,730,985,571,727,552/401,387,513.51
  6. Step 6: Final answer
    x = 310,749,540.97

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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.