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Finding the Fourth Proportional to 258,750.47, 387,994.46 and 118,388.81

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Solution

The fourth proportional to 258,750.47, 387,994.46 and 118,388.81 is: 177,523.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,750.47 : 387,994.46 = 118,388.81 : x
  2. Step 2: Convert to fraction form
    258,750.47/387,994.46 = 118,388.81/x
  3. Step 3: Cross multiply
    258,750.47x = 387,994.46 × 118,388.81
  4. Step 4: Simplify right side
    258,750.47x = 45,934,202,784.03
  5. Step 5: Solve for x
    x = 45,934,202,784.03/258,750.47
  6. Step 6: Final answer
    x = 177,523.16

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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.