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Finding the Fourth Proportional to 235,762.56, 325,359.62 and 128,339.80

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Solution

The fourth proportional to 235,762.56, 325,359.62 and 128,339.80 is: 177,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,762.56 : 325,359.62 = 128,339.80 : x
  2. Step 2: Convert to fraction form
    235,762.56/325,359.62 = 128,339.80/x
  3. Step 3: Cross multiply
    235,762.56x = 325,359.62 × 128,339.80
  4. Step 4: Simplify right side
    235,762.56x = 41,756,588,558.88
  5. Step 5: Solve for x
    x = 41,756,588,558.88/235,762.56
  6. Step 6: Final answer
    x = 177,112.89

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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.