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Finding the Fourth Proportional to 258,750.35, 387,994.27 and 118,388.69

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Solution

The fourth proportional to 258,750.35, 387,994.27 and 118,388.69 is: 177,522.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,750.35 : 387,994.27 = 118,388.69 : x
  2. Step 2: Convert to fraction form
    258,750.35/387,994.27 = 118,388.69/x
  3. Step 3: Cross multiply
    258,750.35x = 387,994.27 × 118,388.69
  4. Step 4: Simplify right side
    258,750.35x = 45,934,133,352.81
  5. Step 5: Solve for x
    x = 45,934,133,352.81/258,750.35
  6. Step 6: Final answer
    x = 177,522.98

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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.