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Finding the Fourth Proportional to 219,906.32, 329,913.21 and 70,146.64

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Solution

The fourth proportional to 219,906.32, 329,913.21 and 70,146.64 is: 105,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,906.32 : 329,913.21 = 70,146.64 : x
  2. Step 2: Convert to fraction form
    219,906.32/329,913.21 = 70,146.64/x
  3. Step 3: Cross multiply
    219,906.32x = 329,913.21 × 70,146.64
  4. Step 4: Simplify right side
    219,906.32x = 23,142,301,523.55
  5. Step 5: Solve for x
    x = 23,142,301,523.55/219,906.32
  6. Step 6: Final answer
    x = 105,237.09

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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.