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Finding the Fourth Proportional to 340,372.11, 510,492.29 and 129,960.03

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Solution

The fourth proportional to 340,372.11, 510,492.29 and 129,960.03 is: 194,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,372.11 : 510,492.29 = 129,960.03 : x
  2. Step 2: Convert to fraction form
    340,372.11/510,492.29 = 129,960.03/x
  3. Step 3: Cross multiply
    340,372.11x = 510,492.29 × 129,960.03
  4. Step 4: Simplify right side
    340,372.11x = 66,343,592,673.37
  5. Step 5: Solve for x
    x = 66,343,592,673.37/340,372.11
  6. Step 6: Final answer
    x = 194,914.89

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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.