Home / 387,286,019.82-534,441,034.40-211,070,517.80

Finding the Fourth Proportional to 387,286,019.82, 534,441,034.40 and 211,070,517.80

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Solution

The fourth proportional to 387,286,019.82, 534,441,034.40 and 211,070,517.80 is: 291,269,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,286,019.82 : 534,441,034.40 = 211,070,517.80 : x
  2. Step 2: Convert to fraction form
    387,286,019.82/534,441,034.40 = 211,070,517.80/x
  3. Step 3: Cross multiply
    387,286,019.82x = 534,441,034.40 × 211,070,517.80
  4. Step 4: Simplify right side
    387,286,019.82x = 112,804,745,860,648,048
  5. Step 5: Solve for x
    x = 112,804,745,860,648,048/387,286,019.82
  6. Step 6: Final answer
    x = 291,269,862.81

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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.