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Finding the Fourth Proportional to 455,197.72, 628,169.46 and 251,248.60

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Solution

The fourth proportional to 455,197.72, 628,169.46 and 251,248.60 is: 346,721.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,197.72 : 628,169.46 = 251,248.60 : x
  2. Step 2: Convert to fraction form
    455,197.72/628,169.46 = 251,248.60/x
  3. Step 3: Cross multiply
    455,197.72x = 628,169.46 × 251,248.60
  4. Step 4: Simplify right side
    455,197.72x = 157,826,697,387.76
  5. Step 5: Solve for x
    x = 157,826,697,387.76/455,197.72
  6. Step 6: Final answer
    x = 346,721.19

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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.