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Finding the Fourth Proportional to 289,630.73, 399,607.96 and 168,748.66

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Solution

The fourth proportional to 289,630.73, 399,607.96 and 168,748.66 is: 232,825.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,630.73 : 399,607.96 = 168,748.66 : x
  2. Step 2: Convert to fraction form
    289,630.73/399,607.96 = 168,748.66/x
  3. Step 3: Cross multiply
    289,630.73x = 399,607.96 × 168,748.66
  4. Step 4: Simplify right side
    289,630.73x = 67,433,308,678.18
  5. Step 5: Solve for x
    x = 67,433,308,678.18/289,630.73
  6. Step 6: Final answer
    x = 232,825.12

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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.