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Finding the Fourth Proportional to 289,337.53, 399,193.08 and 187,441.55

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Solution

The fourth proportional to 289,337.53, 399,193.08 and 187,441.55 is: 258,609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,337.53 : 399,193.08 = 187,441.55 : x
  2. Step 2: Convert to fraction form
    289,337.53/399,193.08 = 187,441.55/x
  3. Step 3: Cross multiply
    289,337.53x = 399,193.08 × 187,441.55
  4. Step 4: Simplify right side
    289,337.53x = 74,825,369,664.47
  5. Step 5: Solve for x
    x = 74,825,369,664.47/289,337.53
  6. Step 6: Final answer
    x = 258,609.28

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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.