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Finding the Fourth Proportional to 395,641.86, 593,461.35 and 218,055.30

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Solution

The fourth proportional to 395,641.86, 593,461.35 and 218,055.30 is: 327,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,641.86 : 593,461.35 = 218,055.30 : x
  2. Step 2: Convert to fraction form
    395,641.86/593,461.35 = 218,055.30/x
  3. Step 3: Cross multiply
    395,641.86x = 593,461.35 × 218,055.30
  4. Step 4: Simplify right side
    395,641.86x = 129,407,392,712.66
  5. Step 5: Solve for x
    x = 129,407,392,712.66/395,641.86
  6. Step 6: Final answer
    x = 327,082.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.