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Finding the Fourth Proportional to 299,840.52, 449,838.67 and 89,478.46

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Solution

The fourth proportional to 299,840.52, 449,838.67 and 89,478.46 is: 134,240.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,840.52 : 449,838.67 = 89,478.46 : x
  2. Step 2: Convert to fraction form
    299,840.52/449,838.67 = 89,478.46/x
  3. Step 3: Cross multiply
    299,840.52x = 449,838.67 × 89,478.46
  4. Step 4: Simplify right side
    299,840.52x = 40,250,871,440.05
  5. Step 5: Solve for x
    x = 40,250,871,440.05/299,840.52
  6. Step 6: Final answer
    x = 134,240.93

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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.