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Finding the Fourth Proportional to 235,914, 325,556.46 and 128,485.92

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Solution

The fourth proportional to 235,914, 325,556.46 and 128,485.92 is: 177,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,914 : 325,556.46 = 128,485.92 : x
  2. Step 2: Convert to fraction form
    235,914/325,556.46 = 128,485.92/x
  3. Step 3: Cross multiply
    235,914x = 325,556.46 × 128,485.92
  4. Step 4: Simplify right side
    235,914x = 41,829,421,275.04
  5. Step 5: Solve for x
    x = 41,829,421,275.04/235,914
  6. Step 6: Final answer
    x = 177,307.92

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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.