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Finding the Fourth Proportional to 399,492.77, 551,522.81 and 277,166.57

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Solution

The fourth proportional to 399,492.77, 551,522.81 and 277,166.57 is: 382,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,492.77 : 551,522.81 = 277,166.57 : x
  2. Step 2: Convert to fraction form
    399,492.77/551,522.81 = 277,166.57/x
  3. Step 3: Cross multiply
    399,492.77x = 551,522.81 × 277,166.57
  4. Step 4: Simplify right side
    399,492.77x = 152,863,684,138.63
  5. Step 5: Solve for x
    x = 152,863,684,138.63/399,492.77
  6. Step 6: Final answer
    x = 382,644.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.