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Finding the Fourth Proportional to 343,139.96, 514,778.64 and 118,508.60

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Solution

The fourth proportional to 343,139.96, 514,778.64 and 118,508.60 is: 177,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,139.96 : 514,778.64 = 118,508.60 : x
  2. Step 2: Convert to fraction form
    343,139.96/514,778.64 = 118,508.60/x
  3. Step 3: Cross multiply
    343,139.96x = 514,778.64 × 118,508.60
  4. Step 4: Simplify right side
    343,139.96x = 61,005,695,936.30
  5. Step 5: Solve for x
    x = 61,005,695,936.30/343,139.96
  6. Step 6: Final answer
    x = 177,786.63

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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.