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Finding the Fourth Proportional to 395,389.06, 545,615.31 and 234,259

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Solution

The fourth proportional to 395,389.06, 545,615.31 and 234,259 is: 323,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,389.06 : 545,615.31 = 234,259 : x
  2. Step 2: Convert to fraction form
    395,389.06/545,615.31 = 234,259/x
  3. Step 3: Cross multiply
    395,389.06x = 545,615.31 × 234,259
  4. Step 4: Simplify right side
    395,389.06x = 127,815,296,905.29
  5. Step 5: Solve for x
    x = 127,815,296,905.29/395,389.06
  6. Step 6: Final answer
    x = 323,264.63

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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.