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Finding the Fourth Proportional to 213,447.96, 320,177.70 and 55,672.92

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Solution

The fourth proportional to 213,447.96, 320,177.70 and 55,672.92 is: 83,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,447.96 : 320,177.70 = 55,672.92 : x
  2. Step 2: Convert to fraction form
    213,447.96/320,177.70 = 55,672.92/x
  3. Step 3: Cross multiply
    213,447.96x = 320,177.70 × 55,672.92
  4. Step 4: Simplify right side
    213,447.96x = 17,825,227,477.88
  5. Step 5: Solve for x
    x = 17,825,227,477.88/213,447.96
  6. Step 6: Final answer
    x = 83,510.88

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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.