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Finding the Fourth Proportional to 395,005.92, 592,508.94 and 217,421.52

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Solution

The fourth proportional to 395,005.92, 592,508.94 and 217,421.52 is: 326,132.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,005.92 : 592,508.94 = 217,421.52 : x
  2. Step 2: Convert to fraction form
    395,005.92/592,508.94 = 217,421.52/x
  3. Step 3: Cross multiply
    395,005.92x = 592,508.94 × 217,421.52
  4. Step 4: Simplify right side
    395,005.92x = 128,824,194,348.39
  5. Step 5: Solve for x
    x = 128,824,194,348.39/395,005.92
  6. Step 6: Final answer
    x = 326,132.31

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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.