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Finding the Fourth Proportional to 399,894.17, 551,852.60 and 218,606.04

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Solution

The fourth proportional to 399,894.17, 551,852.60 and 218,606.04 is: 301,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,894.17 : 551,852.60 = 218,606.04 : x
  2. Step 2: Convert to fraction form
    399,894.17/551,852.60 = 218,606.04/x
  3. Step 3: Cross multiply
    399,894.17x = 551,852.60 × 218,606.04
  4. Step 4: Simplify right side
    399,894.17x = 120,638,310,456.67
  5. Step 5: Solve for x
    x = 120,638,310,456.67/399,894.17
  6. Step 6: Final answer
    x = 301,675.60

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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.