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Finding the Fourth Proportional to 239,675.90, 359,487.29 and 85,795.79

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Solution

The fourth proportional to 239,675.90, 359,487.29 and 85,795.79 is: 128,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,675.90 : 359,487.29 = 85,795.79 : x
  2. Step 2: Convert to fraction form
    239,675.90/359,487.29 = 85,795.79/x
  3. Step 3: Cross multiply
    239,675.90x = 359,487.29 × 85,795.79
  4. Step 4: Simplify right side
    239,675.90x = 30,842,493,814.09
  5. Step 5: Solve for x
    x = 30,842,493,814.09/239,675.90
  6. Step 6: Final answer
    x = 128,684.17

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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.