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Finding the Fourth Proportional to 258,412.68, 387,717.84 and 100,751.04

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Solution

The fourth proportional to 258,412.68, 387,717.84 and 100,751.04 is: 151,165.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,412.68 : 387,717.84 = 100,751.04 : x
  2. Step 2: Convert to fraction form
    258,412.68/387,717.84 = 100,751.04/x
  3. Step 3: Cross multiply
    258,412.68x = 387,717.84 × 100,751.04
  4. Step 4: Simplify right side
    258,412.68x = 39,062,975,606.55
  5. Step 5: Solve for x
    x = 39,062,975,606.55/258,412.68
  6. Step 6: Final answer
    x = 151,165.09

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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.