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Finding the Fourth Proportional to 394,992.42, 592,488.63 and 217,408.02

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Solution

The fourth proportional to 394,992.42, 592,488.63 and 217,408.02 is: 326,112.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,992.42 : 592,488.63 = 217,408.02 : x
  2. Step 2: Convert to fraction form
    394,992.42/592,488.63 = 217,408.02/x
  3. Step 3: Cross multiply
    394,992.42x = 592,488.63 × 217,408.02
  4. Step 4: Simplify right side
    394,992.42x = 128,811,779,920.81
  5. Step 5: Solve for x
    x = 128,811,779,920.81/394,992.42
  6. Step 6: Final answer
    x = 326,112.03

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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.