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Finding the Fourth Proportional to 453,212.37, 680,118.03 and 213,394.86

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Solution

The fourth proportional to 453,212.37, 680,118.03 and 213,394.86 is: 320,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,212.37 : 680,118.03 = 213,394.86 : x
  2. Step 2: Convert to fraction form
    453,212.37/680,118.03 = 213,394.86/x
  3. Step 3: Cross multiply
    453,212.37x = 680,118.03 × 213,394.86
  4. Step 4: Simplify right side
    453,212.37x = 145,133,690,995.10
  5. Step 5: Solve for x
    x = 145,133,690,995.10/453,212.37
  6. Step 6: Final answer
    x = 320,233.30

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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.