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Finding the Fourth Proportional to 299,903.70, 449,905.95 and 89,562.90

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Solution

The fourth proportional to 299,903.70, 449,905.95 and 89,562.90 is: 134,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,903.70 : 449,905.95 = 89,562.90 : x
  2. Step 2: Convert to fraction form
    299,903.70/449,905.95 = 89,562.90/x
  3. Step 3: Cross multiply
    299,903.70x = 449,905.95 × 89,562.90
  4. Step 4: Simplify right side
    299,903.70x = 40,294,881,609.26
  5. Step 5: Solve for x
    x = 40,294,881,609.26/299,903.70
  6. Step 6: Final answer
    x = 134,359.40

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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.