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Finding the Fourth Proportional to 395,287.18, 545,492.52 and 213,994.36

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Solution

The fourth proportional to 395,287.18, 545,492.52 and 213,994.36 is: 295,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,287.18 : 545,492.52 = 213,994.36 : x
  2. Step 2: Convert to fraction form
    395,287.18/545,492.52 = 213,994.36/x
  3. Step 3: Cross multiply
    395,287.18x = 545,492.52 × 213,994.36
  4. Step 4: Simplify right side
    395,287.18x = 116,732,322,702.19
  5. Step 5: Solve for x
    x = 116,732,322,702.19/395,287.18
  6. Step 6: Final answer
    x = 295,310.17

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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.