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Finding the Fourth Proportional to 215,128.80, 322,713.44 and 63,325.98

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Solution

The fourth proportional to 215,128.80, 322,713.44 and 63,325.98 is: 94,994.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,128.80 : 322,713.44 = 63,325.98 : x
  2. Step 2: Convert to fraction form
    215,128.80/322,713.44 = 63,325.98/x
  3. Step 3: Cross multiply
    215,128.80x = 322,713.44 × 63,325.98
  4. Step 4: Simplify right side
    215,128.80x = 20,436,143,723.76
  5. Step 5: Solve for x
    x = 20,436,143,723.76/215,128.80
  6. Step 6: Final answer
    x = 94,994.92

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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.