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Finding the Fourth Proportional to 401,076.45, 601,209.62 and 251,421.63

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Solution

The fourth proportional to 401,076.45, 601,209.62 and 251,421.63 is: 376,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,076.45 : 601,209.62 = 251,421.63 : x
  2. Step 2: Convert to fraction form
    401,076.45/601,209.62 = 251,421.63/x
  3. Step 3: Cross multiply
    401,076.45x = 601,209.62 × 251,421.63
  4. Step 4: Simplify right side
    401,076.45x = 151,157,104,572.34
  5. Step 5: Solve for x
    x = 151,157,104,572.34/401,076.45
  6. Step 6: Final answer
    x = 376,878.53

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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.