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Finding the Fourth Proportional to 215,347.86, 323,072.91 and 67,603.86

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Solution

The fourth proportional to 215,347.86, 323,072.91 and 67,603.86 is: 101,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,347.86 : 323,072.91 = 67,603.86 : x
  2. Step 2: Convert to fraction form
    215,347.86/323,072.91 = 67,603.86/x
  3. Step 3: Cross multiply
    215,347.86x = 323,072.91 × 67,603.86
  4. Step 4: Simplify right side
    215,347.86x = 21,840,975,777.43
  5. Step 5: Solve for x
    x = 21,840,975,777.43/215,347.86
  6. Step 6: Final answer
    x = 101,421.84

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1.5x scale

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.