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Finding the Fourth Proportional to 219,783.21, 329,662.06 and 84,820.88

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Solution

The fourth proportional to 219,783.21, 329,662.06 and 84,820.88 is: 127,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,783.21 : 329,662.06 = 84,820.88 : x
  2. Step 2: Convert to fraction form
    219,783.21/329,662.06 = 84,820.88/x
  3. Step 3: Cross multiply
    219,783.21x = 329,662.06 × 84,820.88
  4. Step 4: Simplify right side
    219,783.21x = 27,962,226,031.81
  5. Step 5: Solve for x
    x = 27,962,226,031.81/219,783.21
  6. Step 6: Final answer
    x = 127,226.40

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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.