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Finding the Fourth Proportional to 235,762.59, 325,359.72 and 128,339.79

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Solution

The fourth proportional to 235,762.59, 325,359.72 and 128,339.79 is: 177,112.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,762.59 : 325,359.72 = 128,339.79 : x
  2. Step 2: Convert to fraction form
    235,762.59/325,359.72 = 128,339.79/x
  3. Step 3: Cross multiply
    235,762.59x = 325,359.72 × 128,339.79
  4. Step 4: Simplify right side
    235,762.59x = 41,756,598,139.26
  5. Step 5: Solve for x
    x = 41,756,598,139.26/235,762.59
  6. Step 6: Final answer
    x = 177,112.91

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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.