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Finding the Fourth Proportional to 239,642.78, 359,204.23 and 118,147.51

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Solution

The fourth proportional to 239,642.78, 359,204.23 and 118,147.51 is: 177,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,642.78 : 359,204.23 = 118,147.51 : x
  2. Step 2: Convert to fraction form
    239,642.78/359,204.23 = 118,147.51/x
  3. Step 3: Cross multiply
    239,642.78x = 359,204.23 × 118,147.51
  4. Step 4: Simplify right side
    239,642.78x = 42,439,084,162.59
  5. Step 5: Solve for x
    x = 42,439,084,162.59/239,642.78
  6. Step 6: Final answer
    x = 177,093.10

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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.