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Finding the Fourth Proportional to 235,407.45, 324,858.44 and 127,980.20

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Solution

The fourth proportional to 235,407.45, 324,858.44 and 127,980.20 is: 176,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,407.45 : 324,858.44 = 127,980.20 : x
  2. Step 2: Convert to fraction form
    235,407.45/324,858.44 = 127,980.20/x
  3. Step 3: Cross multiply
    235,407.45x = 324,858.44 × 127,980.20
  4. Step 4: Simplify right side
    235,407.45x = 41,575,445,858.69
  5. Step 5: Solve for x
    x = 41,575,445,858.69/235,407.45
  6. Step 6: Final answer
    x = 176,610.58

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1.5x scale

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.