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Finding the Fourth Proportional to 422,221.19, 633,438.71 and 122,695.34

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Solution

The fourth proportional to 422,221.19, 633,438.71 and 122,695.34 is: 184,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,221.19 : 633,438.71 = 122,695.34 : x
  2. Step 2: Convert to fraction form
    422,221.19/633,438.71 = 122,695.34/x
  3. Step 3: Cross multiply
    422,221.19x = 633,438.71 × 122,695.34
  4. Step 4: Simplify right side
    422,221.19x = 77,719,974,111.94
  5. Step 5: Solve for x
    x = 77,719,974,111.94/422,221.19
  6. Step 6: Final answer
    x = 184,074.08

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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.