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Finding the Fourth Proportional to 455,068.74, 627,994.36 and 251,119.60

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Solution

The fourth proportional to 455,068.74, 627,994.36 and 251,119.60 is: 346,544.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,068.74 : 627,994.36 = 251,119.60 : x
  2. Step 2: Convert to fraction form
    455,068.74/627,994.36 = 251,119.60/x
  3. Step 3: Cross multiply
    455,068.74x = 627,994.36 × 251,119.60
  4. Step 4: Simplify right side
    455,068.74x = 157,701,692,485.46
  5. Step 5: Solve for x
    x = 157,701,692,485.46/455,068.74
  6. Step 6: Final answer
    x = 346,544.77

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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.