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Finding the Fourth Proportional to 299,912.40, 450,041.40 and 112,942.80

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Solution

The fourth proportional to 299,912.40, 450,041.40 and 112,942.80 is: 169,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,912.40 : 450,041.40 = 112,942.80 : x
  2. Step 2: Convert to fraction form
    299,912.40/450,041.40 = 112,942.80/x
  3. Step 3: Cross multiply
    299,912.40x = 450,041.40 × 112,942.80
  4. Step 4: Simplify right side
    299,912.40x = 50,828,935,831.92
  5. Step 5: Solve for x
    x = 50,828,935,831.92/299,912.40
  6. Step 6: Final answer
    x = 169,479.27

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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.