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Finding the Fourth Proportional to 339,996.48, 510,011.36 and 129,595.20

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Solution

The fourth proportional to 339,996.48, 510,011.36 and 129,595.20 is: 194,399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,996.48 : 510,011.36 = 129,595.20 : x
  2. Step 2: Convert to fraction form
    339,996.48/510,011.36 = 129,595.20/x
  3. Step 3: Cross multiply
    339,996.48x = 510,011.36 × 129,595.20
  4. Step 4: Simplify right side
    339,996.48x = 66,095,024,201.47
  5. Step 5: Solve for x
    x = 66,095,024,201.47/339,996.48
  6. Step 6: Final answer
    x = 194,399.14

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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.