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Finding the Fourth Proportional to 455,297.73, 628,316 and 251,348.77

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Solution

The fourth proportional to 455,297.73, 628,316 and 251,348.77 is: 346,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,297.73 : 628,316 = 251,348.77 : x
  2. Step 2: Convert to fraction form
    455,297.73/628,316 = 251,348.77/x
  3. Step 3: Cross multiply
    455,297.73x = 628,316 × 251,348.77
  4. Step 4: Simplify right side
    455,297.73x = 157,926,453,771.32
  5. Step 5: Solve for x
    x = 157,926,453,771.32/455,297.73
  6. Step 6: Final answer
    x = 346,864.14

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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.