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Finding the Fourth Proportional to 239,328, 359,009.28 and 91,584

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Solution

The fourth proportional to 239,328, 359,009.28 and 91,584 is: 137,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,328 : 359,009.28 = 91,584 : x
  2. Step 2: Convert to fraction form
    239,328/359,009.28 = 91,584/x
  3. Step 3: Cross multiply
    239,328x = 359,009.28 × 91,584
  4. Step 4: Simplify right side
    239,328x = 32,879,505,899.52
  5. Step 5: Solve for x
    x = 32,879,505,899.52/239,328
  6. Step 6: Final answer
    x = 137,382.61

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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.