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Finding the Fourth Proportional to 218,964.30, 328,219.65 and 118,913.10

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Solution

The fourth proportional to 218,964.30, 328,219.65 and 118,913.10 is: 178,246.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,964.30 : 328,219.65 = 118,913.10 : x
  2. Step 2: Convert to fraction form
    218,964.30/328,219.65 = 118,913.10/x
  3. Step 3: Cross multiply
    218,964.30x = 328,219.65 × 118,913.10
  4. Step 4: Simplify right side
    218,964.30x = 39,029,616,062.42
  5. Step 5: Solve for x
    x = 39,029,616,062.42/218,964.30
  6. Step 6: Final answer
    x = 178,246.48

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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.