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Finding the Fourth Proportional to 219,281.68, 328,930.40 and 112,636.88

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Solution

The fourth proportional to 219,281.68, 328,930.40 and 112,636.88 is: 168,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,281.68 : 328,930.40 = 112,636.88 : x
  2. Step 2: Convert to fraction form
    219,281.68/328,930.40 = 112,636.88/x
  3. Step 3: Cross multiply
    219,281.68x = 328,930.40 × 112,636.88
  4. Step 4: Simplify right side
    219,281.68x = 37,049,693,993.15
  5. Step 5: Solve for x
    x = 37,049,693,993.15/219,281.68
  6. Step 6: Final answer
    x = 168,959.37

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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.