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Finding the Fourth Proportional to 343,422.40, 514,987.80 and 165,983.80

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Solution

The fourth proportional to 343,422.40, 514,987.80 and 165,983.80 is: 248,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,422.40 : 514,987.80 = 165,983.80 : x
  2. Step 2: Convert to fraction form
    343,422.40/514,987.80 = 165,983.80/x
  3. Step 3: Cross multiply
    343,422.40x = 514,987.80 × 165,983.80
  4. Step 4: Simplify right side
    343,422.40x = 85,479,631,997.64
  5. Step 5: Solve for x
    x = 85,479,631,997.64/343,422.40
  6. Step 6: Final answer
    x = 248,905.23

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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.