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Finding the Fourth Proportional to 258,524.80, 387,657.60 and 118,124.80

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Solution

The fourth proportional to 258,524.80, 387,657.60 and 118,124.80 is: 177,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,524.80 : 387,657.60 = 118,124.80 : x
  2. Step 2: Convert to fraction form
    258,524.80/387,657.60 = 118,124.80/x
  3. Step 3: Cross multiply
    258,524.80x = 387,657.60 × 118,124.80
  4. Step 4: Simplify right side
    258,524.80x = 45,791,976,468.48
  5. Step 5: Solve for x
    x = 45,791,976,468.48/258,524.80
  6. Step 6: Final answer
    x = 177,127.98

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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.