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Finding the Fourth Proportional to 395,009.39, 545,109.08 and 213,717.34

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Solution

The fourth proportional to 395,009.39, 545,109.08 and 213,717.34 is: 294,927.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,009.39 : 545,109.08 = 213,717.34 : x
  2. Step 2: Convert to fraction form
    395,009.39/545,109.08 = 213,717.34/x
  3. Step 3: Cross multiply
    395,009.39x = 545,109.08 × 213,717.34
  4. Step 4: Simplify right side
    395,009.39x = 116,499,262,587.45
  5. Step 5: Solve for x
    x = 116,499,262,587.45/395,009.39
  6. Step 6: Final answer
    x = 294,927.83

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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.