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Finding the Fourth Proportional to 258,751.60, 387,996.08 and 118,389.94

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Solution

The fourth proportional to 258,751.60, 387,996.08 and 118,389.94 is: 177,524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,751.60 : 387,996.08 = 118,389.94 : x
  2. Step 2: Convert to fraction form
    258,751.60/387,996.08 = 118,389.94/x
  3. Step 3: Cross multiply
    258,751.60x = 387,996.08 × 118,389.94
  4. Step 4: Simplify right side
    258,751.60x = 45,934,831,069.50
  5. Step 5: Solve for x
    x = 45,934,831,069.50/258,751.60
  6. Step 6: Final answer
    x = 177,524.82

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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.