Home / 398,557,409.90-550,009,459.98-222,345,406.13

Finding the Fourth Proportional to 398,557,409.90, 550,009,459.98 and 222,345,406.13

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Solution

The fourth proportional to 398,557,409.90, 550,009,459.98 and 222,345,406.13 is: 306,836,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,557,409.90 : 550,009,459.98 = 222,345,406.13 : x
  2. Step 2: Convert to fraction form
    398,557,409.90/550,009,459.98 = 222,345,406.13/x
  3. Step 3: Cross multiply
    398,557,409.90x = 550,009,459.98 × 222,345,406.13
  4. Step 4: Simplify right side
    398,557,409.90x = 122,292,076,751,845,040
  5. Step 5: Solve for x
    x = 122,292,076,751,845,040/398,557,409.90
  6. Step 6: Final answer
    x = 306,836,791.18

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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.