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Finding the Fourth Proportional to 219,622.32, 329,207.22 and 86,448.60

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Solution

The fourth proportional to 219,622.32, 329,207.22 and 86,448.60 is: 129,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,622.32 : 329,207.22 = 86,448.60 : x
  2. Step 2: Convert to fraction form
    219,622.32/329,207.22 = 86,448.60/x
  3. Step 3: Cross multiply
    219,622.32x = 329,207.22 × 86,448.60
  4. Step 4: Simplify right side
    219,622.32x = 28,459,503,278.89
  5. Step 5: Solve for x
    x = 28,459,503,278.89/219,622.32
  6. Step 6: Final answer
    x = 129,583.84

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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.