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Finding the Fourth Proportional to 235,345.71, 352,907.69 and 85,480.32

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Solution

The fourth proportional to 235,345.71, 352,907.69 and 85,480.32 is: 128,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,345.71 : 352,907.69 = 85,480.32 : x
  2. Step 2: Convert to fraction form
    235,345.71/352,907.69 = 85,480.32/x
  3. Step 3: Cross multiply
    235,345.71x = 352,907.69 × 85,480.32
  4. Step 4: Simplify right side
    235,345.71x = 30,166,661,844.26
  5. Step 5: Solve for x
    x = 30,166,661,844.26/235,345.71
  6. Step 6: Final answer
    x = 128,180.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.