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Finding the Fourth Proportional to 426,851.94, 640,090.32 and 227,124.86

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Solution

The fourth proportional to 426,851.94, 640,090.32 and 227,124.86 is: 340,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,851.94 : 640,090.32 = 227,124.86 : x
  2. Step 2: Convert to fraction form
    426,851.94/640,090.32 = 227,124.86/x
  3. Step 3: Cross multiply
    426,851.94x = 640,090.32 × 227,124.86
  4. Step 4: Simplify right side
    426,851.94x = 145,380,424,317.36
  5. Step 5: Solve for x
    x = 145,380,424,317.36/426,851.94
  6. Step 6: Final answer
    x = 340,587.47

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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.