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Finding the Fourth Proportional to 388,555.89, 582,807.06 and 238,819.29

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Solution

The fourth proportional to 388,555.89, 582,807.06 and 238,819.29 is: 358,212.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,555.89 : 582,807.06 = 238,819.29 : x
  2. Step 2: Convert to fraction form
    388,555.89/582,807.06 = 238,819.29/x
  3. Step 3: Cross multiply
    388,555.89x = 582,807.06 × 238,819.29
  4. Step 4: Simplify right side
    388,555.89x = 139,185,568,276.19
  5. Step 5: Solve for x
    x = 139,185,568,276.19/388,555.89
  6. Step 6: Final answer
    x = 358,212.48

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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.