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Finding the Fourth Proportional to 455,345.62, 628,364.44 and 251,392.83

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Solution

The fourth proportional to 455,345.62, 628,364.44 and 251,392.83 is: 346,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,345.62 : 628,364.44 = 251,392.83 : x
  2. Step 2: Convert to fraction form
    455,345.62/628,364.44 = 251,392.83/x
  3. Step 3: Cross multiply
    455,345.62x = 628,364.44 × 251,392.83
  4. Step 4: Simplify right side
    455,345.62x = 157,966,314,842.97
  5. Step 5: Solve for x
    x = 157,966,314,842.97/455,345.62
  6. Step 6: Final answer
    x = 346,915.20

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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.