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Finding the Fourth Proportional to 228,859.78, 343,205.40 and 79,061.62

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Solution

The fourth proportional to 228,859.78, 343,205.40 and 79,061.62 is: 118,563.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,859.78 : 343,205.40 = 79,061.62 : x
  2. Step 2: Convert to fraction form
    228,859.78/343,205.40 = 79,061.62/x
  3. Step 3: Cross multiply
    228,859.78x = 343,205.40 × 79,061.62
  4. Step 4: Simplify right side
    228,859.78x = 27,134,374,916.75
  5. Step 5: Solve for x
    x = 27,134,374,916.75/228,859.78
  6. Step 6: Final answer
    x = 118,563.32

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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.