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Finding the Fourth Proportional to 399,091.71, 598,736.93 and 118,601.31

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Solution

The fourth proportional to 399,091.71, 598,736.93 and 118,601.31 is: 177,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,091.71 : 598,736.93 = 118,601.31 : x
  2. Step 2: Convert to fraction form
    399,091.71/598,736.93 = 118,601.31/x
  3. Step 3: Cross multiply
    399,091.71x = 598,736.93 × 118,601.31
  4. Step 4: Simplify right side
    399,091.71x = 71,010,983,650.37
  5. Step 5: Solve for x
    x = 71,010,983,650.37/399,091.71
  6. Step 6: Final answer
    x = 177,931.49

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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.