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Finding the Fourth Proportional to 343,606.99, 515,484.57 and 103,700.85

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Solution

The fourth proportional to 343,606.99, 515,484.57 and 103,700.85 is: 155,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,606.99 : 515,484.57 = 103,700.85 : x
  2. Step 2: Convert to fraction form
    343,606.99/515,484.57 = 103,700.85/x
  3. Step 3: Cross multiply
    343,606.99x = 515,484.57 × 103,700.85
  4. Step 4: Simplify right side
    343,606.99x = 53,456,188,070.88
  5. Step 5: Solve for x
    x = 53,456,188,070.88/343,606.99
  6. Step 6: Final answer
    x = 155,573.63

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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.