Home / 391,681,383.03-540,503,267.04-215,458,204.64

Finding the Fourth Proportional to 391,681,383.03, 540,503,267.04 and 215,458,204.64

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Solution

The fourth proportional to 391,681,383.03, 540,503,267.04 and 215,458,204.64 is: 297,322,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,681,383.03 : 540,503,267.04 = 215,458,204.64 : x
  2. Step 2: Convert to fraction form
    391,681,383.03/540,503,267.04 = 215,458,204.64/x
  3. Step 3: Cross multiply
    391,681,383.03x = 540,503,267.04 × 215,458,204.64
  4. Step 4: Simplify right side
    391,681,383.03x = 116,455,863,515,790,352
  5. Step 5: Solve for x
    x = 116,455,863,515,790,352/391,681,383.03
  6. Step 6: Final answer
    x = 297,322,948.09

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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.