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Finding the Fourth Proportional to 258,576.30, 387,864.45 and 169,929.90

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Solution

The fourth proportional to 258,576.30, 387,864.45 and 169,929.90 is: 254,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,576.30 : 387,864.45 = 169,929.90 : x
  2. Step 2: Convert to fraction form
    258,576.30/387,864.45 = 169,929.90/x
  3. Step 3: Cross multiply
    258,576.30x = 387,864.45 × 169,929.90
  4. Step 4: Simplify right side
    258,576.30x = 65,909,767,202.06
  5. Step 5: Solve for x
    x = 65,909,767,202.06/258,576.30
  6. Step 6: Final answer
    x = 254,894.85

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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.