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Finding the Fourth Proportional to 343,896.60, 515,844.90 and 338,647.80

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Solution

The fourth proportional to 343,896.60, 515,844.90 and 338,647.80 is: 507,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,896.60 : 515,844.90 = 338,647.80 : x
  2. Step 2: Convert to fraction form
    343,896.60/515,844.90 = 338,647.80/x
  3. Step 3: Cross multiply
    343,896.60x = 515,844.90 × 338,647.80
  4. Step 4: Simplify right side
    343,896.60x = 174,689,740,526.22
  5. Step 5: Solve for x
    x = 174,689,740,526.22/343,896.60
  6. Step 6: Final answer
    x = 507,971.70

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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.