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Finding the Fourth Proportional to 258,127.60, 387,190.60 and 68,607.04

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Solution

The fourth proportional to 258,127.60, 387,190.60 and 68,607.04 is: 102,910.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,127.60 : 387,190.60 = 68,607.04 : x
  2. Step 2: Convert to fraction form
    258,127.60/387,190.60 = 68,607.04/x
  3. Step 3: Cross multiply
    258,127.60x = 387,190.60 × 68,607.04
  4. Step 4: Simplify right side
    258,127.60x = 26,564,000,981.82
  5. Step 5: Solve for x
    x = 26,564,000,981.82/258,127.60
  6. Step 6: Final answer
    x = 102,910.35

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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.