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Finding the Fourth Proportional to 454,970.40, 627,861.32 and 251,021.28

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Solution

The fourth proportional to 454,970.40, 627,861.32 and 251,021.28 is: 346,410.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,970.40 : 627,861.32 = 251,021.28 : x
  2. Step 2: Convert to fraction form
    454,970.40/627,861.32 = 251,021.28/x
  3. Step 3: Cross multiply
    454,970.40x = 627,861.32 × 251,021.28
  4. Step 4: Simplify right side
    454,970.40x = 157,606,552,208.89
  5. Step 5: Solve for x
    x = 157,606,552,208.89/454,970.40
  6. Step 6: Final answer
    x = 346,410.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.