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Finding the Fourth Proportional to 343,090.35, 514,655.69 and 132,729.39

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Solution

The fourth proportional to 343,090.35, 514,655.69 and 132,729.39 is: 199,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,090.35 : 514,655.69 = 132,729.39 : x
  2. Step 2: Convert to fraction form
    343,090.35/514,655.69 = 132,729.39/x
  3. Step 3: Cross multiply
    343,090.35x = 514,655.69 × 132,729.39
  4. Step 4: Simplify right side
    343,090.35x = 68,309,935,130.08
  5. Step 5: Solve for x
    x = 68,309,935,130.08/343,090.35
  6. Step 6: Final answer
    x = 199,101.88

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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.