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Finding the Fourth Proportional to 342,798.28, 514,231.44 and 118,128.58

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Solution

The fourth proportional to 342,798.28, 514,231.44 and 118,128.58 is: 177,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,798.28 : 514,231.44 = 118,128.58 : x
  2. Step 2: Convert to fraction form
    342,798.28/514,231.44 = 118,128.58/x
  3. Step 3: Cross multiply
    342,798.28x = 514,231.44 × 118,128.58
  4. Step 4: Simplify right side
    342,798.28x = 60,745,429,798.56
  5. Step 5: Solve for x
    x = 60,745,429,798.56/342,798.28
  6. Step 6: Final answer
    x = 177,204.59

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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.