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Finding the Fourth Proportional to 395,092.50, 545,168.99 and 239,963.06

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Solution

The fourth proportional to 395,092.50, 545,168.99 and 239,963.06 is: 331,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,092.50 : 545,168.99 = 239,963.06 : x
  2. Step 2: Convert to fraction form
    395,092.50/545,168.99 = 239,963.06/x
  3. Step 3: Cross multiply
    395,092.50x = 545,168.99 × 239,963.06
  4. Step 4: Simplify right side
    395,092.50x = 130,820,421,020.34
  5. Step 5: Solve for x
    x = 130,820,421,020.34/395,092.50
  6. Step 6: Final answer
    x = 331,113.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.