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Finding the Fourth Proportional to 268,927.39, 403,262.42 and 156,639.64

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Solution

The fourth proportional to 268,927.39, 403,262.42 and 156,639.64 is: 234,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,927.39 : 403,262.42 = 156,639.64 : x
  2. Step 2: Convert to fraction form
    268,927.39/403,262.42 = 156,639.64/x
  3. Step 3: Cross multiply
    268,927.39x = 403,262.42 × 156,639.64
  4. Step 4: Simplify right side
    268,927.39x = 63,166,878,502.97
  5. Step 5: Solve for x
    x = 63,166,878,502.97/268,927.39
  6. Step 6: Final answer
    x = 234,884.51

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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.