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Finding the Fourth Proportional to 387,115.00, 534,200.62 and 215,044.12

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Solution

The fourth proportional to 387,115.00, 534,200.62 and 215,044.12 is: 296,750.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,115.00 : 534,200.62 = 215,044.12 : x
  2. Step 2: Convert to fraction form
    387,115.00/534,200.62 = 215,044.12/x
  3. Step 3: Cross multiply
    387,115.00x = 534,200.62 × 215,044.12
  4. Step 4: Simplify right side
    387,115.00x = 114,876,699,759.82
  5. Step 5: Solve for x
    x = 114,876,699,759.82/387,115.00
  6. Step 6: Final answer
    x = 296,750.84

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1.5x scale

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.