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Finding the Fourth Proportional to 395,412.48, 545,671.77 and 214,124.40

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Solution

The fourth proportional to 395,412.48, 545,671.77 and 214,124.40 is: 295,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,412.48 : 545,671.77 = 214,124.40 : x
  2. Step 2: Convert to fraction form
    395,412.48/545,671.77 = 214,124.40/x
  3. Step 3: Cross multiply
    395,412.48x = 545,671.77 × 214,124.40
  4. Step 4: Simplify right side
    395,412.48x = 116,841,640,348.19
  5. Step 5: Solve for x
    x = 116,841,640,348.19/395,412.48
  6. Step 6: Final answer
    x = 295,493.05

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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.