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Finding the Fourth Proportional to 198,953.79, 274,547.83 and 108,307.88

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Solution

The fourth proportional to 198,953.79, 274,547.83 and 108,307.88 is: 149,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,953.79 : 274,547.83 = 108,307.88 : x
  2. Step 2: Convert to fraction form
    198,953.79/274,547.83 = 108,307.88/x
  3. Step 3: Cross multiply
    198,953.79x = 274,547.83 × 108,307.88
  4. Step 4: Simplify right side
    198,953.79x = 29,735,693,425.90
  5. Step 5: Solve for x
    x = 29,735,693,425.90/198,953.79
  6. Step 6: Final answer
    x = 149,460.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.