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Finding the Fourth Proportional to 339,997.48, 510,012.86 and 129,596.20

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Solution

The fourth proportional to 339,997.48, 510,012.86 and 129,596.20 is: 194,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,997.48 : 510,012.86 = 129,596.20 : x
  2. Step 2: Convert to fraction form
    339,997.48/510,012.86 = 129,596.20/x
  3. Step 3: Cross multiply
    339,997.48x = 510,012.86 × 129,596.20
  4. Step 4: Simplify right side
    339,997.48x = 66,095,728,607.13
  5. Step 5: Solve for x
    x = 66,095,728,607.13/339,997.48
  6. Step 6: Final answer
    x = 194,400.64

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1.5x scale

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.