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Finding the Fourth Proportional to 258,360.04, 387,539.34 and 71,371

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Solution

The fourth proportional to 258,360.04, 387,539.34 and 71,371 is: 107,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,360.04 : 387,539.34 = 71,371 : x
  2. Step 2: Convert to fraction form
    258,360.04/387,539.34 = 71,371/x
  3. Step 3: Cross multiply
    258,360.04x = 387,539.34 × 71,371
  4. Step 4: Simplify right side
    258,360.04x = 27,659,070,235.14
  5. Step 5: Solve for x
    x = 27,659,070,235.14/258,360.04
  6. Step 6: Final answer
    x = 107,056.30

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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.