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Finding the Fourth Proportional to 445,371.68, 668,168.24 and 129,831.36

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Solution

The fourth proportional to 445,371.68, 668,168.24 and 129,831.36 is: 194,779.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,371.68 : 668,168.24 = 129,831.36 : x
  2. Step 2: Convert to fraction form
    445,371.68/668,168.24 = 129,831.36/x
  3. Step 3: Cross multiply
    445,371.68x = 668,168.24 × 129,831.36
  4. Step 4: Simplify right side
    445,371.68x = 86,749,191,308.01
  5. Step 5: Solve for x
    x = 86,749,191,308.01/445,371.68
  6. Step 6: Final answer
    x = 194,779.32

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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.