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Finding the Fourth Proportional to 219,443.20, 329,164.80 and 108,851.20

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Solution

The fourth proportional to 219,443.20, 329,164.80 and 108,851.20 is: 163,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,443.20 : 329,164.80 = 108,851.20 : x
  2. Step 2: Convert to fraction form
    219,443.20/329,164.80 = 108,851.20/x
  3. Step 3: Cross multiply
    219,443.20x = 329,164.80 × 108,851.20
  4. Step 4: Simplify right side
    219,443.20x = 35,829,983,477.76
  5. Step 5: Solve for x
    x = 35,829,983,477.76/219,443.20
  6. Step 6: Final answer
    x = 163,276.80

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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.