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Finding the Fourth Proportional to 395,354.48, 545,590.18 and 214,068.58

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Solution

The fourth proportional to 395,354.48, 545,590.18 and 214,068.58 is: 295,415.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,354.48 : 545,590.18 = 214,068.58 : x
  2. Step 2: Convert to fraction form
    395,354.48/545,590.18 = 214,068.58/x
  3. Step 3: Cross multiply
    395,354.48x = 545,590.18 × 214,068.58
  4. Step 4: Simplify right side
    395,354.48x = 116,793,715,094.54
  5. Step 5: Solve for x
    x = 116,793,715,094.54/395,354.48
  6. Step 6: Final answer
    x = 295,415.18

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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.