Home / 398,539,467.23-550,093,868.76-231,329,597.61

Finding the Fourth Proportional to 398,539,467.23, 550,093,868.76 and 231,329,597.61

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Solution

The fourth proportional to 398,539,467.23, 550,093,868.76 and 231,329,597.61 is: 319,298,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,539,467.23 : 550,093,868.76 = 231,329,597.61 : x
  2. Step 2: Convert to fraction form
    398,539,467.23/550,093,868.76 = 231,329,597.61/x
  3. Step 3: Cross multiply
    398,539,467.23x = 550,093,868.76 × 231,329,597.61
  4. Step 4: Simplify right side
    398,539,467.23x = 127,252,993,307,978,960
  5. Step 5: Solve for x
    x = 127,252,993,307,978,960/398,539,467.23
  6. Step 6: Final answer
    x = 319,298,347.52

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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.