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Finding the Fourth Proportional to 386,546, 533,491.80 and 235,730.48

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Solution

The fourth proportional to 386,546, 533,491.80 and 235,730.48 is: 325,343.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,546 : 533,491.80 = 235,730.48 : x
  2. Step 2: Convert to fraction form
    386,546/533,491.80 = 235,730.48/x
  3. Step 3: Cross multiply
    386,546x = 533,491.80 × 235,730.48
  4. Step 4: Simplify right side
    386,546x = 125,760,278,090.06
  5. Step 5: Solve for x
    x = 125,760,278,090.06/386,546
  6. Step 6: Final answer
    x = 325,343.63

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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.