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Finding the Fourth Proportional to 343,614.49, 515,298.20 and 118,913.90

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Solution

The fourth proportional to 343,614.49, 515,298.20 and 118,913.90 is: 178,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,614.49 : 515,298.20 = 118,913.90 : x
  2. Step 2: Convert to fraction form
    343,614.49/515,298.20 = 118,913.90/x
  3. Step 3: Cross multiply
    343,614.49x = 515,298.20 × 118,913.90
  4. Step 4: Simplify right side
    343,614.49x = 61,276,115,453.92
  5. Step 5: Solve for x
    x = 61,276,115,453.92/343,614.49
  6. Step 6: Final answer
    x = 178,328.09

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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.