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Finding the Fourth Proportional to 340,072.40, 510,108.60 and 323,742.80

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Solution

The fourth proportional to 340,072.40, 510,108.60 and 323,742.80 is: 485,614.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,072.40 : 510,108.60 = 323,742.80 : x
  2. Step 2: Convert to fraction form
    340,072.40/510,108.60 = 323,742.80/x
  3. Step 3: Cross multiply
    340,072.40x = 510,108.60 × 323,742.80
  4. Step 4: Simplify right side
    340,072.40x = 165,143,986,468.08
  5. Step 5: Solve for x
    x = 165,143,986,468.08/340,072.40
  6. Step 6: Final answer
    x = 485,614.20

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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.