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Finding the Fourth Proportional to 304,819.76, 420,651.20 and 168,862.50

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Solution

The fourth proportional to 304,819.76, 420,651.20 and 168,862.50 is: 233,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,819.76 : 420,651.20 = 168,862.50 : x
  2. Step 2: Convert to fraction form
    304,819.76/420,651.20 = 168,862.50/x
  3. Step 3: Cross multiply
    304,819.76x = 420,651.20 × 168,862.50
  4. Step 4: Simplify right side
    304,819.76x = 71,032,213,260
  5. Step 5: Solve for x
    x = 71,032,213,260/304,819.76
  6. Step 6: Final answer
    x = 233,030.21

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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.