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Finding the Fourth Proportional to 235,730.40, 325,314.84 and 128,307.39

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Solution

The fourth proportional to 235,730.40, 325,314.84 and 128,307.39 is: 177,067.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,730.40 : 325,314.84 = 128,307.39 : x
  2. Step 2: Convert to fraction form
    235,730.40/325,314.84 = 128,307.39/x
  3. Step 3: Cross multiply
    235,730.40x = 325,314.84 × 128,307.39
  4. Step 4: Simplify right side
    235,730.40x = 41,740,296,422.09
  5. Step 5: Solve for x
    x = 41,740,296,422.09/235,730.40
  6. Step 6: Final answer
    x = 177,067.94

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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.