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Finding the Fourth Proportional to 339,655.14, 509,711.82 and 139,971.10

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Solution

The fourth proportional to 339,655.14, 509,711.82 and 139,971.10 is: 210,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,655.14 : 509,711.82 = 139,971.10 : x
  2. Step 2: Convert to fraction form
    339,655.14/509,711.82 = 139,971.10/x
  3. Step 3: Cross multiply
    339,655.14x = 509,711.82 × 139,971.10
  4. Step 4: Simplify right side
    339,655.14x = 71,344,924,128.40
  5. Step 5: Solve for x
    x = 71,344,924,128.40/339,655.14
  6. Step 6: Final answer
    x = 210,051.07

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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.