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Finding the Fourth Proportional to 268,557.80, 403,128.30 and 168,830.60

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Solution

The fourth proportional to 268,557.80, 403,128.30 and 168,830.60 is: 253,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,557.80 : 403,128.30 = 168,830.60 : x
  2. Step 2: Convert to fraction form
    268,557.80/403,128.30 = 168,830.60/x
  3. Step 3: Cross multiply
    268,557.80x = 403,128.30 × 168,830.60
  4. Step 4: Simplify right side
    268,557.80x = 68,060,392,765.98
  5. Step 5: Solve for x
    x = 68,060,392,765.98/268,557.80
  6. Step 6: Final answer
    x = 253,429.22

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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.