Home / 420,749,187.98-580,622,741.40-235,111,729.10

Finding the Fourth Proportional to 420,749,187.98, 580,622,741.40 and 235,111,729.10

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Solution

The fourth proportional to 420,749,187.98, 580,622,741.40 and 235,111,729.10 is: 324,447,962.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,749,187.98 : 580,622,741.40 = 235,111,729.10 : x
  2. Step 2: Convert to fraction form
    420,749,187.98/580,622,741.40 = 235,111,729.10/x
  3. Step 3: Cross multiply
    420,749,187.98x = 580,622,741.40 × 235,111,729.10
  4. Step 4: Simplify right side
    420,749,187.98x = 136,511,216,685,336,144
  5. Step 5: Solve for x
    x = 136,511,216,685,336,144/420,749,187.98
  6. Step 6: Final answer
    x = 324,447,962.31

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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.