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Finding the Fourth Proportional to 258,175.79, 387,415.25 and 108,404.55

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Solution

The fourth proportional to 258,175.79, 387,415.25 and 108,404.55 is: 162,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,175.79 : 387,415.25 = 108,404.55 : x
  2. Step 2: Convert to fraction form
    258,175.79/387,415.25 = 108,404.55/x
  3. Step 3: Cross multiply
    258,175.79x = 387,415.25 × 108,404.55
  4. Step 4: Simplify right side
    258,175.79x = 41,997,575,297.36
  5. Step 5: Solve for x
    x = 41,997,575,297.36/258,175.79
  6. Step 6: Final answer
    x = 162,670.47

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1.5x scale

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.